@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/