It was found that In diffusivity data at 477 to 562C could be described by:

D (cm2/s) = 3.94 x 102 exp[-2.08(eV)/kT]

N.V.Baranova, A.S.Tomson, N.P.Artamonov, A.V.Vanyukov: Izvestiya Akademii Nauk SSSR – Neorganicheskie Materialy, 1976, 12[12], 2142-5