@article{IVM_1967_5_a1,
     author = {E. I. Grindlinger},
     title = {On the question of identities in semigroups},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {6--12},
     year = {1967},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1967_5_a1/}
}