Agricola, G., 1556. De re metallica, J. Froben and N. Episcopius, Basel (translation: 1912 Hoover H. and Hoover L.H., The Mining Magazine, London).
Allen, M., 2012. Mints and Money in Medieval England, Cambridge University Press, Cambridge.
Arles, A., 2009. Entre monnayage officiel et faux-monnayage. La fabrication de la monnaie au marteau en France (xiiie - xviie siècles). Approche physico-chimique, expérimentale et historique. Thèse de doctorat. Université d’Orléans.
Biringuccio, V., 1540. De la pirotecnia, (translation : Vincent J., 1572, La pyrotechnie, ou L'art du feu. Claude Fremy, Paris).
Bompas, A., Kendall, G., Sumner, P., 2013. Spotting fruit versus picking fruit as the selective advantage of human colour vision, i-perception, 4(2): 84-94.
Bosten, J. M., Robinson, J. D., Jordan G., Mollon, J. D., 2005. Multidimensional scaling reveals a color dimension unique to ‘color-deficient’ observers. Current Biology, 15, R950-R952.
Burns, D. T., 1981. A Touchstone for Gold and Silver wares, Analytical Proceedings, 18: 146-151.
Caley, E. R., 1949. Validity of the Specific Gravity Method for the Determination of the Fineness of Gold Objects. The Ohio Journal of Science. 49 (2): 73-81.
Caley, E.R., Richards J.F.C., 1956. Theophrastus on Stones. The Ohio State University, Columbus.
Cauuet, B., Tama, C.G., Boussicault, M., Munoz, M., 2018. Quantités et contrôle de l’or produit à l’âge du fer en Gaule du Centre-Ouest. Mélanges de la Casa de Velázquez, 48-1: 13-42.
Cobb, C., Fetterlof, M. L., Goldwhite, H., 2014. The chemistry of alchemy, From Dragon’s Blood to Donkey Dung How Chemistry was forged, Prometheus book, New York.
Colinet, A., 2000. Les alchimistes grecs, tome X, L’anonyme de Zuretti. Les Belles Lettres, Paris.
Colinet, A., 2010. Les alchimistes grecs, tome XI, Recettes alchimiques. Les Belles Lettres, Paris.
Corti, C.W., 2011. Assaying of Gold Jewelry – Ancient and Modern. The Santa Fe Symposium on Jewelry Manufacturing Technology, 49-70.
Craddock, P., 2000. Assaying in Antiquity (Appendix 5), in Ramage A. and Craddock P., 2000. King Croesus’ Gold, Excavations at Sardis and the History of Gold Refining, Harvard University Press, Cambridge: 245-250.
Cramer, J.A., 1741. Elements of the art of essaying metal, Woodward, London.
Diderot, D., d’Alembert, J., 1779. Encyclopédie ou dictionnaire raisonné des sciences, arts et métiers, Panckoucke, Stoupe et Brunet, Paris.
Eales, H. V., 1967a. Reflectivity of gold and gold-silver alloys. Economic Geology, 62: 412-420.
Eales, H. V., 1967b. Checking of optical data derived from polarization Figures, Economic Geology, 62 (5): 737-738.
Eales, H. V., 1968. Determining fineness variation characteristics in gold ores by reflectometry, Economic Geology, 63 (6): 688- 691.
Eluère, C., 1986. A prehistoric touchstone from France, Gold Bulletin, 19 (2): 58-61.
Eluère, C., 2001. Les secrets de l’or antique, La bibliothèque des arts, Paris.
Ercker, L., 1574. Beschreibung allerfürnemisten Mineralischen Ertzt unnd Bergwercks arten […], Georg Schwartz, Prague.(translation: Pettus J., 1683. Fleta minor the laws of art and nature, in knowing, judging, assaying, fining, refining and inlarging the bodies of confin’d metals, Thomas Dawks, London).
Foster, D. H., 2011. Color constancy, Vision Research, 51: 674-700.
Gowland, W., 1910. Arts of working metals in Japan, Journal of the Institute of Metals, 4: 4-41.
Halleux, R., 1982.·Méthodes d'essai et d'affinage des alliages aurifères dans l’Antiquité et au Moyen Âge. In Morrisson C. ed., Numismatique et histoire, l’or monnayé de Rome à Byzance : purification et altérations. Comptes rendus des séances de l’Académie des Inscriptions et Belles-Lettres, 126e année, no 2: 203-223.
Hughes, M.J., Oddy, W.A., 1970. A reappraisal of the specific gravity method for the analysis of gold alloys, Archaeometry, 12:1-11.
Hunter, R. S., Harold, R. W., 1987. The Measurement of Appearance, John Wiley & Sons, New York.
Jacobson, D. M., 2000. Corinthian Bronze and the Gold of the Alchemists, Gold Bulletin, 33 (2): 60-66.
Ježek, M., 2013. Touchstones of archaeology, Journal of Anthropological Archaeology, 32: 713-731.
Jordan, G., Deeb, S. S., Bosten, J. M., Mollon, J. D., 2010. The dimensionality of color vision in carriers of anomalous trichromacy. Journal of Vision, 10(8) : 12.
Judd, D.B., 1943. Colorblindness and the detection of camouflage. Science, 97: 544-546.
Kilburn-Toppin, J., 2019. ‘A place of great trust to be supplied by men of skill and integrity’: assayers and knowledge cultures in late sixteenth- and seventeenth-century London, The British Journal for the History of Science, 52(2): 197-223.
Kraut, J.C., Stern, W.B., 2000. The density of gold-silver-copper alloys and its calculation from the chemical composition. Gold Bulletin. 33 (2): 52-55.
Lavin, E.P., 1971. Specular Reflection, Monographs on Applied Optics, no 2, Adam Hilger, London.
Lord, L.E., 1937. The Touchstone, The Classical Journal, 32, no 7: 428-431.
Manas, A., 2015. The music of gold: can gold counterfeited coins be detected by ear? European Journal of Physics, 36, no 4: 045012.
Manas, A., 2018a. Fifty shades of yellow. A color model for gold-silver-copper alloys, Gold Bulletin, 51: 205-212.
Manas, A., 2018b. Why do pirates and champions bite gold coins and medals? Revue numismatique, 175: 563-580.
Manche, G.F., 2004. Le contrôle des métaux monétaires, une technique aléatoire au service du bimétallisme : l’exemple vénitien. In Naissance de la science dans l’Italie antique et moderne : actes du colloque franco-italien des 1er et 2 décembre 2000 (Université de Haute-Alsace), Peter Lang : 93-118.
Metcalf, D. M., Merrick, J. M., 1967. Studies in the Composition of Early Medieval Coins, The Numismatic Chronicle, vol. 7: 167-181.
Mokrzycki, W., Tatol, M., 2011. Colour difference Delta E- A survey, Machine Graphics and Vision, 20(4): 383-411.
Moore, D. T., Oddy, W. A., 1985. Touchstones: some Aspects of their Nomenclature, Petrography and Provenance, Journal of Archaeological Science, 12: 59-80.
Morgan, M. J., Adam, A., Mollon, J. D., 1992. Dichromats Detect Colour-Camouflaged Objects That Are Not Detected by Trichromats, Proceedings: Biological Sciences, 248, no 1323: 291-295.
Namer, E., 1964. Le traité de « La balance hydrostatique » de Galilée. Revue d'histoire des sciences et de leurs applications. 17 no 4 : 397-403.
Nassau, K., 1983. The Physics and Chemistry of Color, The fifteen Causes of Color, John Wiley & Sons, New-York.
Oddy, W.A., 1983. Assaying in Antiquity, Gold Bulletin, 16 (2): 52-59.
Oddy, W.A., 1986. The touchstone: the oldest colorimetric method of analysis, Endeavour, New Series, Volume 10: 164-166.
Oddy, W.A., 1993. The assaying of gold by touchstone in antiquity and the medieval world. In Eluère C., Outils et ateliers d’orfèvres des temps anciens. Société des Amis du Musée des Antiquités Nationales et du château de Saint-Germain-en-Laye.
Prescott, T.J., Diamond, M.E., Wing, A.M., 2011. Active touch sensing, Philosophical Transactions of the Royal Society B, 366: 2989-2995.
Pridmore, R.W., Melgosa, M, 2015. All Effects of Psychophysical Variables on Color Attributes: A Classification System. PLoS ONE, 10(4): e0119024.
Radivojević, M., Pendić, J., Srejić, A., Korać, M., Davey, C., Benzonelli, A., Martinón-Torres, M., Jovanović, N., Kamberović, Ž., 2018. Experimental design of the Cu-As-Sn ternary colour diagram, Journal of Archaeological Science, 90: 106-119
Ramage, A., Craddock, P., 2000. King Croesus’ Gold, Excavations at Sardis and the History of Gold Refining, Harvard University Press, Cambridge.
Ridgeway, W., 1895. How far could the Greeks determine the Fineness of Gold and Silver Coins, The Numismatic Chronicle and Journal of the Numismatic Society, Third Series, 15: 104-109.
Sisco, A.G., Smith, C.S., 1949. Bergverk- und Probierbüchlein. A Translation from the German of the Bergbüchlein and of the Probierbüchlein with Technical Annotations and Historical Notes. The American Institue of Mining and Metallurgical Engineers, New-York.
Smith, E.A., 1913. The Sampling and Assay of the Precious Metals, comprising Gold, Silver, Platinum, and the Platinum Group Metals in Ores, Bullion, and Products, Charles Griffin & co, London.
Squair, H., 1965. A reflectometric method for determining the silver content of natural gold alloys. Transactions of the Institution of Mining and Metallurgy, 74: 917-931.
Taylor, F., 1930. A Survey of Greek Alchemy. The Journal of Hellenic Studies, 50: 109-139.
Téreygeol, F., Blet-Lemarquand, M., 2011. Une pierre de touche pour l’essai des métaux précieux. In Mille P. & Téreygeol F., L’atelier monétaire royal de La Rochelle – La place de Verdun : Archéologie d’un espace urbain. Presses universitaires de Rennes, Rennes, 136-138.
Téreygeol, F., Thomas, N., 2003. La coupellation des alliages cuivre-argent: approche expérimentale de l’essai d’argent par voie sèche. Revue d’Archéométrie, 27 : 171-181.
Torrance, K., Sparrow, E., 1967. Theory for Off-Specular Reflection from Roughened Surfaces. Journal of the Optical Society of America, 57: 1105-1114.
Vauquelin, L.-N., 1812. Manuel de l’essayeur, Klostermann, Paris.
Velde, F., 2013. On the Evolution of Specie: Circulation and Weight Loss in 18th and 19th century Coinage, Revue numismatique, 170: 605-650.
Walchli, W., 1981. Touching Precious Metals, Gold Bulletin, 14: 154-158.
Walchli, W., Vuilleumier P., 1985. Aurum, 24: 36-45.
Wilson, W. J., 1936. An Alchemical Manuscript by Arnaldus Bruxella. Osiris, 2: 220-405.