-
@article{PETKO02, author = {Petkovšek, Marko}, doi = {10.1016/s0012-365x(01)00094-2}, issn = {0012-365X}, journal = {Discrete Mathematics}, keywords = {Lettericity, Well-quasi-order, Induced subgraph relation}, month = {February}, number = {1–3}, pages = {375–388}, publisher = {Elsevier BV}, title = {Letter graphs and well-quasi-order by induced subgraphs}, url = {https://www.sciencedirect.com/science/article/pii/S0012365X01000942}, volume = {244}, year = {2002} }