Trends in functional analysis and approximation theory  Acquafredda di Maratea, sept. 10 - 15, 1989 
Calogero Vinti 
 - Bologna  Univ. di Mondena  1991 
 - 456 p  fig  25 cm 
 - Proceedings of the meeting .
<br/><br/> Contine bibliogr. dupa capitole