@article{02166702, title = {Solutions of time-varying singular nonlinear sytems by single-term Walsh series.}, journal = {Mathematical Problems in Engineering}, volume = {2003}, year = {2003}, pages = {129-136}, doi = {10.1155/S1024123X03202027}, zbl = {1175.93100}, language = {en}, url = {http://dml.mathdoc.fr/item/02166702} }
Sepehrian, B.; Razzaghi, M. Solutions of time-varying singular nonlinear sytems by single-term Walsh series.. Mathematical Problems in Engineering, Tome 2003 (2003) pp. 129-136. doi : 10.1155/S1024123X03202027. http://gdmltest.u-ga.fr/item/02166702/