@article{MZM_1974_16_3_a15,
     author = {M. S. Burgin},
     title = {Cancellation law and attainable classes of linear $\Omega$-algebras},
     journal = {Matemati\v{c}eskie zametki},
     pages = {467--478},
     year = {1974},
     volume = {16},
     number = {3},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MZM_1974_16_3_a15/}
}