References
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.. [CLRS09] Cormen, T.; Leiserson, C.; Rivest, R.; Stein, C.: Introduction to Algorithms, Third Edition

.. [GoTa60] Goodrich, M.; Tamassia, R.: Algorithm Design and Applications

.. [KlTa05] Kleinberg, J; Tardos, E: Algorithm Design

.. [dill] M.M. McKerns, L. Strand, T. Sullivan, A. Fang, M.A.G. Aivazis, "Building a framework for predictive science", Proceedings of the 10th Python in Science COnference, 2011; http://arxiv.org/pdf/1202.1056

.. [Kahn62] A. B. Kahn. 1962. Topological sorting of large networks. Commun. ACM 5, 11 (Nov. 1962), 558–562. https://doi.org/10.1145/368996.369025