00294nam a2200121Ia 45000030006000000080041000060400015000471000018000622450054000802600009001345460012001430050017001550STCL150530s9999 xx 000 0 und d aSTCLcSTCL aMikhlin, S.G. aProblems of the minimum of a quadratic functional c1965 aEnglish20220125170029.0