Proceedings of the seminar on statistical data analaysis, Varna 2002. - Bulgarian Academy of Sciences, 2003. - (Pliska studia mathematica Bulgarica; 2000).
Proceedings of the X international summer conference on probability and statistics and seminar on statistical data analysis. SDA 2003. - Bulgarian Academy of Sciences, 2004. - (Pliska studia mathematica Bulgarica; 16).
Proceedings of the international conference on partial differential equations on spaces with geometric singularities, Sofia 2002. - Bulgarian Academy of Sciences, 2003. - (Pliska studia mathematica Bulgarica; 15).
Proceedings of the 9th international summer school on probability theory and mathematical statistics, Sozopol, 1997. - Bulgarian Academy of Sciences, 2000. - (Pliska studia mathematica Bulgarica; 13).
Proceedings of the 4th international conference on mathematical methods in operations research and 6th workshop on well-posedness and stability of optimisation problems. - Bulgarian Academy of Sciences, 1998. - (Pliska studia mathematica Bulgarica; 12).