W. Koehler

On the crystal structure of the manganese(III) trioxides of the heavy lanthanides and yttrium

H. Yakel, W. Koehler, E. Bertaut, 1963 .

Tricritical-Point Phase Diagram in FeCl2

R. Birgeneau, G. Shirane, M. Blume, 1974 .

Higher Oxides of the Lanthanide Elements. Terbium Dioxide1

D. Gruen, J. Katz, W. Koehler, 1951 .