@article{VUU_2021_31_3_a4,
     author = {A. P. Lyapin and S. S. Akhtamova},
     title = {Recurrence relations for the sections of the generating series of the solution to the multidimensional difference equation},
     journal = {Vestnik Udmurtskogo universiteta. Matematika, mehanika, kompʹ\^uternye nauki},
     pages = {414--423},
     publisher = {mathdoc},
     volume = {31},
     number = {3},
     year = {2021},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/VUU_2021_31_3_a4/}
}