@article{IM2_1969_3_2_a4,
     author = {A. S. Pekelis},
     title = {Lattice isomorphisms of group pairs},
     journal = {Izvestiya. Mathematics },
     pages = {375--390},
     publisher = {mathdoc},
     volume = {3},
     number = {2},
     year = {1969},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1969_3_2_a4/}
}