@article{01230061, title = {A note on the Boardman theorem.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {21}, year = {1998}, pages = {819-822}, doi = {10.1155/S0161171298001136}, zbl = {0914.57020}, language = {en}, url = {http://dml.mathdoc.fr/item/01230061} }
Lü, Zhi; Zhou, Chunlian. A note on the Boardman theorem.. International Journal of Mathematics and Mathematical Sciences, Tome 21 (1998) pp. 819-822. doi : 10.1155/S0161171298001136. http://gdmltest.u-ga.fr/item/01230061/