@article{AL_1975_14_4_a2,
     author = {V. M. Kopytov},
     title = {Lattice-ordered locally nilpotent groups},
     journal = {Algebra i logika},
     pages = {407--413},
     year = {1975},
     volume = {14},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1975_14_4_a2/}
}