[1] J. D. C. Little, “A Proof for The Queuing Formula,” Operations Research, Vol. 9, No. 3, 1961, pp. 383-387.
[2] S. Eilon, “A Simpler Proof of ,” Operations Research, Vol. 17, No. 5, 1969, pp. 915-917.
[3] W. Maxwell, “On the Generality of the Equation ”, Operations Research, Vol. 18, No. 1, 1970, pp. 172-174.
[4] S. J. Stidham, “A Last Word on ,” Operations Research, Vol. 22, No. 2, 1974, pp. 417-421.
[5] J. Keilson and L. D. Servi, “The Distributional Form of Little’s Law”, Operations Research Letters, Vol. 9, No. 4, 1990, pp. 239-247.
[6] S. L. Brumelle, “On the Relation between Customer and Time Averages in Queues,” Journal of Applied Pro- bability, Vol. 8, No. 3, 1971, pp. 508-520.
[7] S. L. Brumelle, “A Generalization of to Mom- ents of Queue Length and Waiting Times,” Operations Research, Vol. 20, No. 6, 1972, pp. 1127-1136.
[8] D. P. Heyman and S. Stidham, “The Relation between Customer and Time Averages in Queues,” Operations Research, Vol. 28, No. 4, 1980, pp. 983-994.
[9] R. Haji and G. F. Newell, “A Relation between Stationary Queue and Waiting-Time Distributions,” Journal of Applied Probability, Vol. 8, No. 3, 1971, pp. 617-620.
[10] T. Rolski and S. Stidham, “Continuous Versions of the Queuing Formulas and ,” Operations Research Letters, Vol. 2, No. 5, 1983, pp. 211-215.
[11] P. W. Glynn and W. Whitt, “Extensions of the Queuing Relations and ,” Operations Research, Vol. 37, No. 4, 1989, pp. 634-644.
[12] W. Whitt, “A Review of and Extensions,” Queueing Systems, Vol. 9, No. 3, 1991, pp. 235-268.
[13] D. Bertsimas and G. Mourtzinou, “Transient Laws of Non-Stationary Queueing Systems and Their Applicati- ons,” Queueing Systems, Vol. 25, No. 1-4, 1997, pp. 115-155.
[14] G. Ria?o, R. Serfozo and S. Hackman, “A Transient Little’s Law,” Technical report, 2003, COPA Centro de Optimización y Probabilidad Aplicada, Universidad de los Andes and Georgia Institute of Technology.
[15] J. I. Zhang, “The Transient Solution of Time-Dependent M/M/1 Queues,” IEEE Transactions on Information Theory, Vol. 37, No. 6, 1991, pp. 1690-1696.
[16] D. Perry, W. Stadje and S. Zacks, “The M/G/1 Queue wi- th Finite Workload Capacity,” Queueing Systems, Vol. 39, No. 1, 2001, pp. 7-22.
[17] J. -M. Garcia, O. Brun and D. Gauchard, “Transient Analytical Solution of M/D/1/N Queues,” Journal of Applied Probability, Vol. 39, No. 4, 2002, pp. 853- 864.
[18] J. W. Cohen, “The Single Server Queue,” North-Holland, Amsterdam, 1982.
[19] S. Asmussen, “Applied Probability and Queues,” 2nd ed. Springer, Berlin, 2003.
[20] I. Adan, O. Boxma and D. Perry, “The Queue Revisited,” Mathematical Methods of Operations Resea- rch, Vol. 62, No. 3, 2005, pp. 437-452.