Berge, Claude.
Second revised edition
Amsterdam ; New York : North Holland ; New York, NY, U.S.A. : Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co., 1985
Berge, Claude.
Third revised edition
Amsterdam ; New York : North Holland ; New York, NY, U.S.A. : Sole distributors for the U.S.A. and Canada, Elsevier Science Pub. Co., 1991