Hagen Höpfner. Topological Sorting - How Should I Begin to Complete My To Do List?. In Berthold Vöcking, Helmut Alt, Martin Dietzfelbinger, Rüdiger Reischuk, Christian Scheideler, Heribert Vollmer, Dorothea Wagner, editors, Algorithms Unplugged. pages 39-45, Springer, 2011. [doi]
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