@article{Kostočka_1983, title={Odna zadača ob orientirovannyh grafah}, volume={6}, url={https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/3243}, number={1}, journal={Acta Cybernetica}, author={Kostočka, Aleksandr Vasil’evič}, year={1983}, month={Jan.}, pages={89-91} }