@article{PFMT_2011_1_a6,
     author = {N. N. Vorob'ev and A. P. Mekhovich},
     title = {{\CYRO}n direct decompositions of $n$-multiply $\omega$-saturated formations},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {48--51},
     publisher = {mathdoc},
     number = {1},
     year = {2011},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2011_1_a6/}
}