]]> http://bibliotecas.utl.pt/cgi-bin/koha/opac-detail.pl?biblionumber=61572 ISBN 0821860143 (alk. paper) http://bibliotecas.utl.pt/cgi-bin/koha/opac-detail.pl?biblionumber=16701 Providence, R.I : Published by the American Mathematical Society for the Canadian Mathematical Society, 1988 . xiv, 261 p : 26 cm. 0821860143 (alk. paper)

]]> http://bibliotecas.utl.pt/cgi-bin/koha/opac-detail.pl?biblionumber=16701 ISBN 0821860194 http://bibliotecas.utl.pt/cgi-bin/koha/opac-detail.pl?biblionumber=16702 Providence : AMS for the Canadian Mathematical Society (CMS), 1993 0821860194

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