1. Modeling and Analysis: an Introduction to System Performance Evaluation Methodology;Kobayashi,1978
2. Review of operator/machine interference models;Stecke;Int. J. Prod. Res.,1985
3. Fundamentals of Queuing Theory;Gross,1974
4. Machine interference;Benson,1957
5. The G/M/r machine interference model;Bunday;Eur. J. opl Res.,1980