@article {TaskinUnal2009, title = {Tactical Level Planning in Float Glass Manufacturing with Co-Production, Random Yields and Substitutable Products}, journal = {European Journal of Operational Research}, volume = {199}, number = {1}, year = {2009}, pages = {252-261}, doi = {http://dx.doi.org/10.1016/j.ejor.2008.11.024}, author = {Z C Ta{\c s}k{\i}n and Ali Tamer {\"U}nal} }