@article{PDM_2021_1_a0,
     author = {I. A. Pankratova},
     title = {In memory of {Teacher}},
     journal = {Prikladna\^a diskretna\^a matematika},
     pages = {5--8},
     publisher = {mathdoc},
     number = {1},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PDM_2021_1_a0/}
}