@article{DAN_1978_239_3_a23,
     author = {N. L. Smirnova and V. S. Kurazhkovskaya and N. V. Belov},
     title = {Relationship between compounds. {Composite} classes of the tolerance of chemical elements},
     journal = {Doklady Akademii Nauk},
     pages = {598--599},
     publisher = {mathdoc},
     volume = {239},
     number = {3},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1978_239_3_a23/}
}