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@article{TM_2006_252_a10, author = {L. H. Kaufman and V. O. Manturov}, title = {Virtual {Knots} and {Links}}, journal = {Trudy Matematicheskogo Instituta imeni V.A. Steklova}, pages = {114--133}, publisher = {mathdoc}, volume = {252}, year = {2006}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/TM_2006_252_a10/} }
L. H. Kaufman; V. O. Manturov. Virtual Knots and Links. Trudy Matematicheskogo Instituta imeni V.A. Steklova, Geometric topology, discrete geometry, and set theory, Tome 252 (2006), pp. 114-133. http://geodesic.mathdoc.fr/item/TM_2006_252_a10/