Proceedings - Mathematical Sciences
Proceedings - Mathematical Sciences > 2007 > 117 > 3 > 307-315
Proceedings - Mathematical Sciences > 2009 > 119 > 3 > 283-286
Proceedings - Mathematical Sciences > 2009 > 119 > 5 > 619-627
Proceedings - Mathematical Sciences > 2012 > 122 > 3 > 375-384
Proceedings - Mathematical Sciences > 2017 > 127 > 2 > 219-224
Proceedings - Mathematical Sciences > 2017 > 127 > 5 > 793-814