1. A. Gunz and J. Feree, Electrochemical Preparation of Strontium Amalgam, Bull. Soc. Chim. Fr., Vol 17, 1897, p 390 (in French) (Equi Diagram; Experimental)
2. W. Kerp, On the Knowledge of Amalgams, Z. Anorg. Chem., Vol 17, 1898, p 284–309 (in German) (Equi Diagram; Experimental)
3. W. Kerp, W. Böttger, and H. Iggena, On the Knowledge of Amalgams, Z. Anorg. Chem., Vol 25, 1900, p 1–71 (in German) (Equi Diagram; Experimental)
4. G. Langbein, Ph.D. dissertation, University of Königsberg, 1900 (in German) (as quoted in [Hansen]) (Equi Diagram; Experimental)
5. A. Gunz and G. Roederer, Strontium Amalgams, Bull. Soc. Chim. Fr., Vol 35, 1906, p 494–503 (in French) (Equi Diagram; Experimental)