@article{COCV_2011__17_4_975_0,
     author = {Lou, Hongwei},
     title = {Optimality conditions for semilinear parabolic equations with controls in leading term},
     journal = {ESAIM: Control, Optimisation and Calculus of Variations},
     pages = {975--994},
     publisher = {EDP-Sciences},
     volume = {17},
     number = {4},
     year = {2011},
     doi = {10.1051/cocv/2010034},
     mrnumber = {2859861},
     zbl = {1238.49033},
     language = {en},
     url = {http://www.numdam.org/articles/10.1051/cocv/2010034/}
}