@article{CHEB_2019_20_1_a4,
     author = {A. D. Gvishiani and S. M. Agayan and Sh. R. Bogoutdinov},
     title = {Investigation of systems of real functions on two-dimensional grids using fuzzy sets},
     journal = {\v{C}eby\v{s}evskij sbornik},
     pages = {94--111},
     publisher = {mathdoc},
     volume = {20},
     number = {1},
     year = {2019},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/CHEB_2019_20_1_a4/}
}