@article{IVM_1972_2_a3,
     author = {V. S. Garvatskii and V. S. Trohimenko},
     title = {A~semiadjacence relation of certain transformation semigroups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {23--32},
     publisher = {mathdoc},
     number = {2},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1972_2_a3/}
}