@article{GDZPPN002042118, title = {Simple minimum coverings of Kn with copies of K4 - e.}, journal = {Aequationes mathematicae}, volume = {52}, year = {1996}, pages = {284-301}, zbl = {0917.05057}, url = {http://dml.mathdoc.fr/item/GDZPPN002042118} }
Penfold Street, Anne; Lindner, Charles. Simple minimum coverings of Kn with copies of K4 - e.. Aequationes mathematicae, Tome 52 (1996) pp. 284-301. http://gdmltest.u-ga.fr/item/GDZPPN002042118/