RT Book, Section T1 On the approximate controllability for higher order parabolic nonlinear equations of Cahn-Hilliard type A1 Díaz Díaz, Jesús Ildefonso A1 Ramos Del Olmo, Ángel Manuel A2 Desch, W. A2 Kappel, F. A2 Kunisch, K. AB Sire prove the approximate controllability property for some higher order parabolic nonlinear equations of Cahn-Hilliard type when the nonlinearity is of sublinear type at infinity. We also give a counterexample showing that this property may fail when the nonlinearity is of superlinear type. PB Birhäuser SN 3-7643-5835-1 YR 1998 FD 1998 LK https://hdl.handle.net/20.500.14352/60556 UL https://hdl.handle.net/20.500.14352/60556 LA eng NO International conference on control and estimation of distributed parameter systems (1996. Vorau, Austria) DS Docta Complutense RD 26 mar 2026