@article{1102986032,
author = {Kalbfleisch, J. G. and Stanton, R. G.},
title = {Maximal and minimal coverings of $(k-1)$-tuples by $k$-tuples.},
journal = {Pacific J. Math.},
volume = {27},
number = {3},
year = {1968},
pages = { 131-140},
language = {en},
url = {http://dml.mathdoc.fr/item/1102986032}
}
Kalbfleisch, J. G.; Stanton, R. G. Maximal and minimal coverings of $(k-1)$-tuples by $k$-tuples.. Pacific J. Math., Tome 27 (1968) no. 3, pp. 131-140. http://gdmltest.u-ga.fr/item/1102986032/