@article{PFMT_2016_4_a7,
     author = {N. N. Vorob'ev and A. R. Kuznetsova},
     title = {On separated lattices of saturated formations},
     journal = {Problemy fiziki, matematiki i tehniki},
     pages = {45--47},
     publisher = {mathdoc},
     number = {4},
     year = {2016},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/PFMT_2016_4_a7/}
}