@article{INTO_2018_158_a1,
     author = {I. Sh. Kalimullin and V. L. Selivanov and A. N. Frolov},
     title = {Degree spectra of structures},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {23--39},
     publisher = {mathdoc},
     volume = {158},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2018_158_a1/}
}