Joseph Y.-T. Leung Haibing Li Michael Pinedo Chelliah Sriskandarajah Open shops with jobs overlap - revisited. 569-571 2005 163 European Journal of Operational Research 2 http://dx.doi.org/10.1016/j.ejor.2003.11.023 db/journals/eor/eor163.html#LeungLPS05