TY - JOUR AU - S. A. Gel'fer TI - The variational method in the theory of parametrically representable analytic functions JO - Informatics and Automation PY - 1968 SP - 19 EP - 26 VL - 94 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TRSPY_1968_94_a2/ LA - ru ID - TRSPY_1968_94_a2 ER -