@article{1138847438, author = {Vanhecke, Lieven}, title = {On $r$-fold $(4,\,2)$- and $f$-products}, journal = {Kodai Math. Sem. Rep.}, volume = {29}, number = {1-2}, year = {1977}, pages = { 162-181}, language = {en}, url = {http://dml.mathdoc.fr/item/1138847438} }
Vanhecke, Lieven. On $r$-fold $(4,\,2)$- and $f$-products. Kodai Math. Sem. Rep., Tome 29 (1977) no. 1-2, pp. 162-181. http://gdmltest.u-ga.fr/item/1138847438/