@article{05228054, title = {The two-dimensional eikonal equation.}, journal = {Sibirskij Matematicheskij Zhurnal}, volume = {47}, year = {2006}, pages = {993-1018}, zbl = {1150.76463}, language = {en}, url = {http://dml.mathdoc.fr/item/05228054} }
Borovskikh, A.V. The two-dimensional eikonal equation.. Sibirskij Matematicheskij Zhurnal, Tome 47 (2006) pp. 993-1018. http://gdmltest.u-ga.fr/item/05228054/