@article{GDZPPN00117200X, title = {An Iteration Scheme for Boundary Value-Alternative Problems.}, journal = {Numerische Mathematik}, volume = {22}, year = {1974}, pages = {223-230}, zbl = {0302.65051}, url = {http://dml.mathdoc.fr/item/GDZPPN00117200X} }
Sânchez, D.A. An Iteration Scheme for Boundary Value-Alternative Problems.. Numerische Mathematik, Tome 22 (1974) pp. 223-230. http://gdmltest.u-ga.fr/item/GDZPPN00117200X/