@article{05164247, title = {On the biharmonicity of product maps.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2006}, year = {2006}, doi = {10.1155/IJMMS/2006/73094}, zbl = {1124.53026}, language = {en}, url = {http://dml.mathdoc.fr/item/05164247} }
Todjihounde, Leonard. On the biharmonicity of product maps.. International Journal of Mathematics and Mathematical Sciences, Tome 2006 (2006) . doi : 10.1155/IJMMS/2006/73094. http://gdmltest.u-ga.fr/item/05164247/