info:oai:pure.iiasa.ac.at:4252info:ofi/fmt:xml:xsd:journalErmolievY.M.Ermoliev, Y.M.NorkinV.I.Norkin, V.I.WetsR.J.-B.Wets, R.J.-B.13319951095-7138The minimization of semicontinuous functions: Mollifier subgradientsSIAM Journal on Control and Optimization149-167article