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@article{AL_1990_29_3_a5, author = {D. G. Khramtsov}, title = {On the fundamental group of a 3-manifold}, journal = {Algebra i logika}, pages = {345--349}, publisher = {mathdoc}, volume = {29}, number = {3}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1990_29_3_a5/} }
D. G. Khramtsov. On the fundamental group of a 3-manifold. Algebra i logika, Tome 29 (1990) no. 3, pp. 345-349. http://geodesic.mathdoc.fr/item/AL_1990_29_3_a5/