1. 06Fri: K. Friedrich and A. Lerouz, “Silver and Silver Sulfide,”Metallurgie, 11, 361–371 (1906) in German (Equi Diagram)
2. 12Jae: F.M. Jaeger and H.S. Van Klooster, “Silver and Sulfur,”Z. Anorg. Chem., 78, 248–252 (1912) in German. (Equi Diagram)
3. 12Tru: W. Truthe, “The System Ag2S-AgCl,”Z. Anorg. Chem., 76, 168–170 (1912) in German. (Equi Diagram)
4. 15Ura: G.G. Urazow, “Equilibrium Diagram of the System Ag+Ag2S and Cu+S,”J. Inst. Met., 14, 234–235 (1915). (Equi Diagram)
5. 20Key: F.G. Keyes and W.A. Felsing, “The Equilibrium Conditions of the Reaction Between Silver Sulfide and Hydrogen,”J. Am. Chem. Soc., 42, 246–251 (1920). (Thermo)