@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/