Deterministic and Stochastic Scheduling - Dempster, M.A.H.; Lenstra, J.K.; Rinnooy Kan, A.H.G. R. Schassberger — 1983 Metrika
Sojourn times in feedback and processor sharing queues - J. L. van den Berg. R. Schassberger — 1995 Metrika
Probability and Random Processes, amd G. R. Grimmett, D. R. Strizacker: Probability and Random Processes, Problems and Solutions - G. R. Grimmett; D. R. Stirzacker. R. Schaßberger — 1994 Metrika