%0 Journal Article %A Roland Glowinski %A Tuomo Rossi %T A mixed formulation and exact controllability approach for the computation of the periodic solutions of the scalar wave equation. (I): Controllability problem formulation and related iterative solution %J Comptes Rendus. Mathématique %D 2006 %P 493-498 %V 343 %N 7 %I Elsevier %R 10.1016/j.crma.2006.08.002 %G en %F CRMATH_2006__343_7_493_0