Brief history for FET:
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On 31 October 2002 - Liviu Lalescu started the project. The algorithm was genetic, very inefficient.
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On 19 March 2006 - Volker Dirr joined the project. He reported that his difficult data file could not be solved by FET,
but could be solved by other software, and insisted to continue the search for a better algorithm for FET.
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On 24 June 2007 - The current efficient heuristic FET-5 algorithm was found.