TY - JOUR AU - T. Šukilović TI - Isometry groups of $4$-dimensional nilpotent Lie groups JO - Fundamentalʹnaâ i prikladnaâ matematika PY - 2015 SP - 257 EP - 271 VL - 20 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/FPM_2015_20_3_a12/ LA - ru ID - FPM_2015_20_3_a12 ER -