Proceedings - Mathematical Sciences
Proceedings - Mathematical Sciences > 2007 > 117 > 2 > 259-265
Proceedings - Mathematical Sciences > 2013 > 123 > 4 > 515-524
Proceedings - Mathematical Sciences > 2018 > 128 > 2 > 1-26
Proceedings - Mathematical Sciences > 2007 > 117 > 2 > 259-265
Proceedings - Mathematical Sciences > 2013 > 123 > 4 > 515-524
Proceedings - Mathematical Sciences > 2018 > 128 > 2 > 1-26