1. Medhi, J.: ‘Stochastic models in queueing theory’, (Academic Press 1991)
2. Khintchine, A.Y.: ‘Mathematical methods in the theory of queueing’, 2nd(Hafner, New York 1969),English translation from Russian
3. Cooper, R.B.: ‘Introduction to queueing theory’, 2(Elsevier Science, New York 1981)
4. Kleinrock, L.: ‘Queueing systems: Volume I-Theory’, (Wiley, New York 1976)
5. Gross, D., and Harris, C. H.: ‘Fundamentals of queueing theory’, (John Wiley 1998)