@article{SM_1971_14_1_a6,
     author = {A. Yu. Ol'shanskii},
     title = {Solvable just-non-cross varieties of groups},
     journal = {Sbornik. Mathematics},
     pages = {115--129},
     publisher = {mathdoc},
     volume = {14},
     number = {1},
     year = {1971},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1971_14_1_a6/}
}