@article{FSSC_2021_16_1_a2,
     author = {L. A. Pomortsev and V. I. Tsurkov},
     title = {Hygiene of derivation sequences},
     journal = {Ne\v{c}etkie sistemy i m\^agkie vy\v{c}isleni\^a},
     pages = {34--57},
     publisher = {mathdoc},
     volume = {16},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/FSSC_2021_16_1_a2/}
}