PbSe
Chattopadhyay, T.K.Grosshans, W.von Schnering, H.G.Holzapfel, W.B.
Physica B and C (Netherland) (79,1975-) (1986) 139, 356-360
a=6.133Å b=6.133Å c=6.133Å
α=90° β=90° γ=90°
Sc
Vohra, Y. K.Grosshans, W.Holzapfel, W. B.
Physical Review B (1982) 25, 6019-6021
a=4.73Å b=4.73Å c=3.18Å