P. Erdös. Two problems in extremal graph theory. Graphs and Combinatorics, 2(1):189-190, 1986. [doi]
@article{Erdos86-0, title = {Two problems in extremal graph theory}, author = {P. Erdös}, year = {1986}, doi = {10.1007/BF01788092}, url = {http://dx.doi.org/10.1007/BF01788092}, researchr = {https://researchr.org/publication/Erdos86-0}, cites = {0}, citedby = {0}, journal = {Graphs and Combinatorics}, volume = {2}, number = {1}, pages = {189-190}, }