Journal of Mathematical Sciences
Journal of Mathematical Sciences > 2011 > 172 > 6 > 901-908
Journal of Mathematical Sciences > 2011 > 172 > 6 > 794-801
Journal of Mathematical Sciences > 2011 > 172 > 6 > 837-851
Journal of Mathematical Sciences > 2011 > 172 > 6 > 802-810
Journal of Mathematical Sciences > 2011 > 172 > 6 > 870-893
Journal of Mathematical Sciences > 2011 > 172 > 6 > 824-836
Journal of Mathematical Sciences > 2011 > 172 > 6 > 770-781