@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/