EPR study of local symmetry sites of `Ce POT.3+´ in `Pb IND.1-x´`Ce IND.x´A (A=S, Se, and Te) - Gratens, X; Bindilatti, Valdir; Chitta, Valmir Antonio; Oliveira Jr., N. F.; Isber, S; Golacki, Z (Physical Review B, 2009)