%0 Journal Article %A Ehrig, H. %A Kühnel, W. %T Categorical approach to nonlinear constant continuous-time systems %J RAIRO. Informatique théorique %D 1979 %P 107-133 %V 13 %N 2 %I EDP-Sciences %U http://www.numdam.org/item/ITA_1979__13_2_107_0/ %G en %F ITA_1979__13_2_107_0