... 272 of Lecture Notes in Control and Information Sciences,Springer, Berlin, Germany, 2001.[18] E. J. Balder, “Necessary and sufficient conditions for L1-strong-weak lower semicontinuity of integral ... Existence of optimal controlsIn this section, we not only present the existence of PCl-mild solution of the controlledsystem (1.1) but also give the existence of optimal controls of systems ... attains its minimum at u0∈ Uad. 4. Necessary conditions of optimalityIn this section, we present necessar y conditions of optimality for Lagrange problem (P).Let (x0,u0) be an optimal...