@article{01779154, title = {Harmonicity of horizontally conformal maps and spectrum of the Laplacian.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {30}, year = {2002}, pages = {709-715}, doi = {10.1155/S0161171202107058}, zbl = {1020.53043}, language = {en}, url = {http://dml.mathdoc.fr/item/01779154} }
Yun, Gabjin. Harmonicity of horizontally conformal maps and spectrum of the Laplacian.. International Journal of Mathematics and Mathematical Sciences, Tome 30 (2002) pp. 709-715. doi : 10.1155/S0161171202107058. http://gdmltest.u-ga.fr/item/01779154/