The diffusive behavior of 99Mo was studied. The results could be described by:

900-1200C:    D (cm2/s) = 3.63 x 10-2 exp[-44.4(kcal/mol)/RT]

1355-1560C:    D (cm2/s) = 1.29 x 100 exp[-58.2(kcal/mol)/RT]

L.V.Pavlinov: Fizika Metallov i Metallovedenie, 1967, 24[2], 272-7