@article{AL_1967_6_5_a4,
     author = {N. G. Khisamiev},
     title = {Unsolvability of the elementary theory of a free lattice},
     journal = {Algebra i logika},
     pages = {45--48},
     publisher = {mathdoc},
     volume = {6},
     number = {5},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_1967_6_5_a4/}
}