@article{AL_1972_11_6_a1,
     author = {P. G. Gres'},
     title = {Character algebras},
     journal = {Algebra i logika},
     pages = {633--647},
     year = {1972},
     volume = {11},
     number = {6},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1972_11_6_a1/}
}