Proceedings - Mathematical Sciences
Proceedings Mathematical Sciences > 2007 > 117 > 1 > 1-12
Proceedings - Mathematical Sciences > 2009 > 119 > 3 > 369-382
Proceedings - Mathematical Sciences > 2011 > 121 > 2 > 143-154
Proceedings Mathematical Sciences > 2007 > 117 > 1 > 1-12
Proceedings - Mathematical Sciences > 2009 > 119 > 3 > 369-382
Proceedings - Mathematical Sciences > 2011 > 121 > 2 > 143-154