TY - JOUR AU - A. N. Kolmogorov AU - L. A. Lyusternik AU - Yu. M. Smirnov AU - A. N. Tikhonov AU - S. V. Fomin TI - Pavel Sergeevich Aleksandrov (on his seventieth birthday and the fiftieth year of his scientific activity) JO - Trudy Matematicheskogo Instituta imeni V.A. Steklova PY - 1966 SP - 2 EP - 6 VL - 21 IS - 4 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/RM_1966_21_4_a0/ LA - en ID - RM_1966_21_4_a0 ER -