TY JOUR TI ABOUT THE SUBGROUPS OF GROUPS GL2 (pn) KW group KW saturation KW theorem KW proof JO Bulletin of KSAU AU Shlepkin, A.A. AU Sabodakh, I.V. AU Darziev, A.N. AU Pronina, E.A. PY 2014 IS PB Krasnoyarsk State Agrarian University