%0 Journal Article %A Niedereichholz, J. %T On the connection between the theory of signal flow graphs and the theory of directed graphs %J ESAIM: Mathematical Modelling and Numerical Analysis %D 1970 %P 3-9 %V 4 %N R2 %I Dunod %C Paris %U http://geodesic.mathdoc.fr/item/M2AN_1970__4_2_3_0/ %G en %F M2AN_1970__4_2_3_0