W. Karush. Minima of Functions of Several Variables with Inequalities as Side Constraints. M.Sc. Dissertation. Dept. of Mathematics, Univ. of Chicago, Chicago, Illinois. 1939..此論文可於以下網址得到：http://wwwlib.umi.com/dxweb/details?doc_no=7371591[失效連結] (需付費)
