TY - JOUR AU - E. A. Volkov TI - Approximate conformal mapping of a disk with a polygonal hole onto a ring by the block method JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1988 SP - 835 EP - 841 VL - 28 IS - 6 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1988_28_6_a5/ LA - ru ID - ZVMMF_1988_28_6_a5 ER -