International Seminar on Stability Problems for Stochastic Models, Kalashnikov, V. V., Penkov, B. I., & Zolotarev, V. M. (1987). Stability problems for stochastic models: Proceedings of the 9th international seminar held in Varna, Bulgaria, May 13-19, 1985. Springer-Verlag.
Παραπομπή σε μορφή Chicago (17η εκδ.)International Seminar on Stability Problems for Stochastic Models, V. V. Kalashnikov, Boian Ivanov Penkov, και V. M. Zolotarev. Stability Problems for Stochastic Models: Proceedings of the 9th International Seminar Held in Varna, Bulgaria, May 13-19, 1985. Berlin: Springer-Verlag, 1987.
Παραπομπή σε μορφή MLA (9th εκδ.)International Seminar on Stability Problems for Stochastic Models, et al. Stability Problems for Stochastic Models: Proceedings of the 9th International Seminar Held in Varna, Bulgaria, May 13-19, 1985. Springer-Verlag, 1987.