Corrigendum and addendum to "A generalization of Wiener's criteria for the continuity of a Borel measure" J. Belley; P. Morales — 1984 Studia Mathematica
Almost periodic weak solutions to forced pendulum type equations without friction. (Summary). J.-M. Belley; G. Fournier — 1992 Aequationes mathematicae
Almost periodic weak solutions to forced pendulum type equations without friction. J.-M. Belley; G. Fournier — 1992 Aequationes mathematicae