PageHeader : Funkcialaj Ekvacioj, 31 (1988) 471-482 Title : A New Characterization of Weak Solutions Title : to the Damped Wave Equations AuthorInfo : By AuthorInfo : A. HARAUX AuthorInfo : (Universite Pierre et Marie Curie, France) section : 0. Introduction and notation section : 1. A new characterization of weak solutions section : 2. Applications section : Bibliography