Öner Közen, M., Güllü, R., Korugan, A., Ünal, A. T., “The value of time spent for sequencing of jobs in random sized batches”, 9th Conference on Stochastic Models of Manufacturing and Service Operations, 2013, Kloster Seeon, Germany, Proceedings of the 9th Conference on Stochastic Models of Manufacturing and Service Operations, 1, 139-146, 2013.