Franke, P.; Neuschütz, D.; Scientific Group Thermodata Europe (SGTE) (2006), Franke, P.; Neuschütz, D. (eds.), "Pr-Sb", Binary Systems. Part 4: Binary Systems from Mn-Mo to Y-Zr (in ஆங்கிலம்), vol. 19B4, Berlin/Heidelberg: Springer-Verlag, pp. 1–4, doi:10.1007/10757285_56, ISBN978-3-540-25024-1, retrieved 2023-06-20
Franke, P.; Neuschütz, D.; Scientific Group Thermodata Europe (SGTE) (2006), Franke, P.; Neuschütz, D. (eds.), "Pr-Sb", Binary Systems. Part 4: Binary Systems from Mn-Mo to Y-Zr (in ஆங்கிலம்), vol. 19B4, Berlin/Heidelberg: Springer-Verlag, pp. 1–4, doi:10.1007/10757285_56, ISBN978-3-540-25024-1, retrieved 2023-06-20