A. M. Popov, “Irreducible semisimple linear Lie groups with finite stationary subgroups of general position”, Funktsional. Anal. i Prilozhen., 12:2 (1978), 91–92; Funct. Anal. Appl., 12:2 (1978), 154–155
A. M. Popov, “Stationary subgroups of general position for certain actions of simple Lie groups”, Funktsional. Anal. i Prilozhen., 10:3 (1976), 88–90; Funct. Anal. Appl., 10:3 (1976), 239–241
A. M. Popov, “Irreducible simple linear Lie groups with finite standard subgroups of general position”, Funktsional. Anal. i Prilozhen., 9:4 (1975), 81–82; Funct. Anal. Appl., 9:4 (1975), 346–347