In3Sm
Shakarov, Kh.O.Semyannikov, A.A.Yatsenko, S.P.Kuvandykov, O.K.
Russian Metallurgy (1981) 1981, 206-210
a=4.62Å b=4.62Å c=4.62Å
α=90° β=90° γ=90°