Temperature dependence of 'Cr POT.3+' site axial distortion in LiSrAl'F IND.6' and LiSrGa'F IND.6' single crystals - Medina, A. N.; Bento, A C; Baesso, Mauro Luciano; Gandra, F. G.; Catunda, Tomaz; Cassanho, A (Journal of Physics-Condensed Matter, 2001)