00290nam a2200121Ia 4500082001700000100001900017245003800036260003100074300002000105490003300125500000500158700000500163  a517bP927.SV  aPrenter, P. M.  aSplines and variational methodsb  aNew YorkbJohn Wileyc1975  axi, 323p. Index  aPure and Applied Mathematics  a  a