Can anybody show useful links for finding Eulerian cycle in directed graphs and the proof for the existence. Thanks in advance.
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This link has helped me before in this task when I had no idea about it so I think it will help here also :
http://translate.googleusercontent.com/translate_c?act=url&depth=1&hl=ru&ie=UTF8&prev=_t&rurl=translate.google.ru&sl=ru&tl=en&u=http://e-maxx.ru/algo/euler_path&usg=ALkJrhhEOpNbRFWQ7qZeo3cZVynIKQ1KEQ
In your link graph is undirected.I interested in directed one.