TY - JOUR TI - Vladimir Petrovich Platonov (on his fiftieth birthday) JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1990 SP - 231 EP - 240 VL - 45 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1990_45_3_a11/ LA - en ID - RM_1990_45_3_a11 ER -