@article{AL_1976_15_2_a5,
     author = {{\CYRA}. {\CYRM}. Slobodskoi and E. I. Fridman},
     title = {Undecidable universal theories of lattices of subgroups of abelian},
     journal = {Algebra i logika},
     pages = {227--234},
     publisher = {mathdoc},
     volume = {15},
     number = {2},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1976_15_2_a5/}
}