共 6 条
- [1] FURMAN NH, 1939, SCOTTS STANDARD METH, V1, P249
- [2] On the effect of a cerium content in the didym- and praseodym containing lanthanum. [J]. BERICHTE DER DEUTSCHEN CHEMISCHEN GESELLSCHAFT, 1902, 35 : 2370 - 2376
- [3] The black oxides of praseodymium. [J]. ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE, 1925, 149 (1/3): : 235 - 262
- [4] ROGERS K, 1933, IND ENG C A, V5, P342
- [5] SVEDA J, 1927, CASOPIS CESKOSLOV LE, V7, P226