Carsten Thomassen. Highly connected non-2-linked digraphs. Combinatorica, 11(4):393-395, 1991.
@article{Thomassen91, title = {Highly connected non-2-linked digraphs}, author = {Carsten Thomassen}, year = {1991}, researchr = {https://researchr.org/publication/Thomassen91}, cites = {0}, citedby = {0}, journal = {Combinatorica}, volume = {11}, number = {4}, pages = {393-395}, }