%0 Journal Article %A V. A. Amelkin %T Enumeration problems solutions for serial sequences with a~permanent difference in adjacent series heights %J Sibirskij žurnal vyčislitelʹnoj matematiki %D 2012 %P 21-29 %V 15 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/SJVM_2012_15_1_a1/ %G ru %F SJVM_2012_15_1_a1