@article{1102906590, author = {Lau, A. Y. W.}, title = {The boundary of a semilattice on an $n$-cell.}, journal = {Pacific J. Math.}, volume = {61}, number = {2}, year = {1975}, pages = { 171-174}, language = {en}, url = {http://dml.mathdoc.fr/item/1102906590} }
Lau, A. Y. W. The boundary of a semilattice on an $n$-cell.. Pacific J. Math., Tome 61 (1975) no. 2, pp. 171-174. http://gdmltest.u-ga.fr/item/1102906590/