@article{05759870, title = {The }, journal = {Surveys in Mathematics and its Applications}, volume = {4}, year = {2009}, pages = {239-252}, zbl = {1193.42130}, language = {en}, url = {http://dml.mathdoc.fr/item/05759870} }
Upadhyay, S.K.; Yadav, R.N.; Debnath, L. The . Surveys in Mathematics and its Applications, Tome 4 (2009) pp. 239-252. http://gdmltest.u-ga.fr/item/05759870/