Production Scheduling
  *http://www.production-scheduling.com/P-S_Cycles_Flash/viewer.swf
  *[[http://sql.ru/forum/actualthread.aspx?tid=466521]]
  *[[http://www.pdfchm.com/book/scheduling-algorithms-8502/]]
  *[[http://citeseer.ist.psu.edu/187751.html]]