%0 Journal Article %A Daniel Alpay %A Dmitry S. Kalyuzhnyı̆-Verbovetzkiı̆ %T On the intersection of null spaces for matrix substitutions in a non-commutative rational formal power series %J Comptes Rendus. Mathématique %D 2004 %P 533-538 %V 339 %N 8 %I Elsevier %R 10.1016/j.crma.2004.08.005 %G en %F CRMATH_2004__339_8_533_0