1. Czachórski, T.: A method to solve diffusion equation with instantaneous return processes acting as boundary conditions. Bulletin of Polish Academy of Sciences, Technical Sciences 41(4), 417–451 (1993)
2. Domańska, J., Kotuliak, I., Atmaca, T., Czachórski, T.: Optical packet filling. In: Proc. of 10th Polish Teletraffic Symposium (2003)
3. Gelenbe, E.: On Approximate Computer Systems Models. Journal of ACM 22(2) (1975)
4. Iglehart, D.: Weak Convergence in Queueing Theory. Advances in Applied Probability 5(5), 570–594 (1973)
5. Kleinrock, L.: Queueing Systems, vol. II. Wiley, New York (1976)