Kathryn Fraughnaugh, Stephen C. Locke. 4-free graphs. Journal of Graph Theory, 26(2):61-71, 1997. [doi]
@article{FraughnaughL97,
title = {4-free graphs},
author = {Kathryn Fraughnaugh and Stephen C. Locke},
year = {1997},
doi = {10.1002/(SICI)1097-0118(199710)26:2<61::AID-JGT1>3.0.CO;2-D},
url = {http://dx.doi.org/10.1002/(SICI)1097-0118(199710)26:2<61::AID-JGT1>3.0.CO;2-D},
researchr = {https://researchr.org/publication/FraughnaughL97},
cites = {0},
citedby = {0},
journal = {Journal of Graph Theory},
volume = {26},
number = {2},
pages = {61-71},
}