%0 Journal Article %A Díaz Díaz, Jesús Ildefonso %A Henry, J. %A Ramos Del Olmo, Ángel Manuel %T On the approximate controllability of some semilinear parabolic boundary-value problems %D 1998 %@ 0095-4616 %U https://hdl.handle.net/20.500.14352/57386 %X We prove the approximate controllability of several nonlinear parabolic boundary-value problems by means of two different methods: the first one can be called a Cancellation method and the second one uses the Kakutani fixed-point theorem. %~