Isotopy of digraphs
Czechoslovak Mathematical Journal, Tome 22 (1972) no. 3, pp. 353-360.
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@article{10_21136_CMJ_1972_101106, author = {Zelinka, Bohdan}, title = {Isotopy of digraphs}, journal = {Czechoslovak Mathematical Journal}, pages = {353--360}, publisher = {mathdoc}, volume = {22}, number = {3}, year = {1972}, doi = {10.21136/CMJ.1972.101106}, mrnumber = {0306037}, zbl = {0239.05118}, language = {en}, url = {https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1972.101106/} }
Zelinka, Bohdan. Isotopy of digraphs. Czechoslovak Mathematical Journal, Tome 22 (1972) no. 3, pp. 353-360. doi : 10.21136/CMJ.1972.101106. https://geodesic-test.mathdoc.fr/articles/10.21136/CMJ.1972.101106/
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