@article{02168621, title = {The pseudodifferential operator }, journal = {International Journal of Mathematics and Mathematical Sciences}, volume = {2004}, year = {2004}, pages = {407-419}, doi = {10.1155/S0161171204212388}, zbl = {1083.46022}, language = {en}, url = {http://dml.mathdoc.fr/item/02168621} }
Pathak, R.S.; Pathak, S. The pseudodifferential operator . International Journal of Mathematics and Mathematical Sciences, Tome 2004 (2004) pp. 407-419. doi : 10.1155/S0161171204212388. http://gdmltest.u-ga.fr/item/02168621/