@article{SEMR_2017_14_a100,
     author = {A. V. Mastikhin},
     title = {On group properties of epidemics equation},
     journal = {Sibirskie \`elektronnye matemati\v{c}eskie izvesti\^a},
     pages = {1413--1423},
     year = {2017},
     volume = {14},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/SEMR_2017_14_a100/}
}