%A Hahn, Geňa %A Sabidussi, Gert %A Woodrow, Robert E. %A NATO Advanced Research Workshop on Cycles and Rays: Basic Structures in Finite and Infinite Graphs %A North Atlantic Treaty Organization. Scientific Affairs Division %T Cycles and rays %I Kluwer Academic Publishers %D 1990 %S NATO ASI series %V ser. C . Mathematical and physical sciences ; v. 301 %U https://ci.nii.ac.jp/ncid/BA0790562X