%0 Journal Article %A René Dáger %A Enrique Zuazua %T Spectral boundary controllability of networks of strings %J Comptes Rendus. Mathématique %D 2002 %P 545-550 %V 334 %N 7 %I Elsevier %R 10.1016/S1631-073X(02)02314-2 %G en %F CRMATH_2002__334_7_545_0