Proceedings - Mathematical Sciences
Proceedings - Mathematical Sciences > 2007 > 117 > 1 > 49-59
Proceedings - Mathematical Sciences > 2011 > 121 > 4 > 435-446
Proceedings - Mathematical Sciences > 2012 > 122 > 3 > 385-397
Proceedings - Mathematical Sciences > 2012 > 122 > 4 > 629-634
Proceedings - Mathematical Sciences > 2016 > 126 > 2 > 253-260