Ryan Martin, Endre Szemerédi. Quadripartite version of the Hajnal-Szemerédi theorem. Discrete Mathematics, 308(19):4337-4360, 2008. [doi]
@article{MartinS08,
title = {Quadripartite version of the Hajnal-Szemerédi theorem},
author = {Ryan Martin and Endre Szemerédi},
year = {2008},
doi = {10.1016/j.disc.2007.08.019},
url = {http://dx.doi.org/10.1016/j.disc.2007.08.019},
researchr = {https://researchr.org/publication/MartinS08},
cites = {0},
citedby = {0},
journal = {Discrete Mathematics},
volume = {308},
number = {19},
pages = {4337-4360},
}