by Noga Alon, H. Tracy Hall,
Christian Knauer, Rom Pinchasi, Raphael Yuster
Reference:
On graphs and algebraic graphs that do not contain cycles of length 4 (Noga Alon, H. Tracy Hall, Christian Knauer, Rom Pinchasi, Raphael Yuster), In Journal of Graph Theory, volume 68, 2011.
Bibtex Entry:
@article{journals/jgt/AlonHKPY11,
author = {Noga Alon and
H. Tracy Hall and
Christian Knauer and
Rom Pinchasi and
Raphael Yuster},
title = {On graphs and algebraic graphs that do not contain cycles
of length 4},
journal = {Journal of Graph Theory},
volume = {68},
number = {2},
year = {2011},
pages = {91-102},
doi = {10.1002/jgt.20542}
}