TY - JOUR AU - V. A. Amelkin TI - Enumeration problems solutions for serial sequences with a~permanent difference in adjacent series heights JO - Sibirskij žurnal vyčislitelʹnoj matematiki PY - 2012 SP - 21 EP - 29 VL - 15 IS - 1 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/SJVM_2012_15_1_a1/ LA - ru ID - SJVM_2012_15_1_a1 ER -