@article{AL_1970_9_2_a3,
     author = {G. T. Kozlov},
     title = {Unsolvability of the elementary theory of lattices of subgroups of
},
     journal = {Algebra i logika},
     pages = {167--171},
     publisher = {mathdoc},
     volume = {9},
     number = {2},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1970_9_2_a3/}
}