@article{SM_1986_54_1_a11,
     author = {V. M. Kopytov},
     title = {A~non-Abelian variety of lattice-ordered groups in which every soluble $l$-group is {Abelian}},
     journal = {Sbornik. Mathematics},
     pages = {239--257},
     publisher = {mathdoc},
     volume = {54},
     number = {1},
     year = {1986},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1986_54_1_a11/}
}