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@article{IVM_1990_12_a4, author = {V. A. Klimenko}, title = {Summation of closed non-self-intersecting diagrams on a~triangular lattice}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {35--39}, publisher = {mathdoc}, number = {12}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1990_12_a4/} }
V. A. Klimenko. Summation of closed non-self-intersecting diagrams on a~triangular lattice. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (1990), pp. 35-39. http://geodesic.mathdoc.fr/item/IVM_1990_12_a4/