%0 Journal Article %A Ilchmann, Achim %A Reis, Timo %T Outer transfer functions of differential-algebraic systems %J ESAIM: Control, Optimisation and Calculus of Variations %D 2017 %P 391-425 %V 23 %N 2 %I EDP-Sciences %U http://archive.numdam.org/articles/10.1051/cocv/2015051/ %R 10.1051/cocv/2015051 %G en %F COCV_2017__23_2_391_0