A bomb calorimeter for measuring the heats of combustion of neodymium, samarium, gadolinium and erbium is described. The heats of combustion of these metals and the heats of formation of their oxides are reported.
Spedding, F. H.; Eberts, R. E.; and Naumann, A. W., "The heats of combustion of some rare-earth metals" (1959). Ames Laboratory ISC Technical Reports. 185.