TY - JOUR AU - B. N. Ivanov TI - Enclosure structures of equal level line fields in the gradient filling problem JO - Numerical methods and programming PY - 2006 SP - 30 EP - 40 VL - 7 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/VMP_2006_7_2_a7/ LA - ru ID - VMP_2006_7_2_a7 ER -