@article{IVM_1986_9_a3,
     author = {M. V. Volkov and A. V. Kelarev},
     title = {Varieties and sheaves of associative rings},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {16--23},
     publisher = {mathdoc},
     number = {9},
     year = {1986},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1986_9_a3/}
}