@article{AL_2010_49_1_a0,
     author = {N. T. Kogabaev},
     title = {Undecidability of the theory of projective planes},
     journal = {Algebra i logika},
     pages = {3--17},
     publisher = {mathdoc},
     volume = {49},
     number = {1},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/AL_2010_49_1_a0/}
}