@article{IVM_1983_1_a3,
     author = {Yu. I. Ermakov},
     title = {On the theory of integrability of tensor structures},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {36--45},
     year = {1983},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1983_1_a3/}
}