@article{SJVM_2013_16_3_a1,
     author = {V. A. Amelkin},
     title = {Enumeration problems of sets of increasing and decreasing $n$-valued serial sequences with double-ended constraints on series heights},
     journal = {Sibirskij \v{z}urnal vy\v{c}islitelʹnoj matematiki},
     pages = {205--215},
     publisher = {mathdoc},
     volume = {16},
     number = {3},
     year = {2013},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SJVM_2013_16_3_a1/}
}