@article{04067404, title = {A variational principle for complex boundary value problems.}, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {11}, year = {1988}, pages = {315-318}, doi = {10.1155/S0161171288000377}, zbl = {0654.35001}, language = {en}, url = {http://dml.mathdoc.fr/item/04067404} }
Hajj, Adnan Atef. A variational principle for complex boundary value problems.. International Journal of Mathematics and Mathematical Sciences, Tome 11 (1988) pp. 315-318. doi : 10.1155/S0161171288000377. http://gdmltest.u-ga.fr/item/04067404/