1. E. W. Bollmeier,Direct Conversion of Heat to Electricity, edited by Joseph Kaye and John A. Welch (John Wiley & Sons, Inc., New York, 1960), p. 46-1.
2. M. Hansen and K. Anderko,Construction of Binary Alloys(McGraw-Hill Book Company, Inc., New York, 1958), p. 1209.