Angelova, Donka, Tzvetan Semerdjiev, Vesselin Jilkov, and Emil Semerdjiev. Application of a Monte Carlo Method for Tracking Maneuvering Target in Clutter In Second IMACS Seminar on Monte-Carlo Methods. Varna, 1999.

Angelova, Donka, Emil Semerdjiev, Ludmila Mihaylova, and Rong X. Li. "An IMMPDAF Solution to Benchmark Problem for Tracking in Clutter and Stand-off Jammer." Information & Security: An International Journal  2 (1999): 55-68.

Jilkov, Vesselin, Donka Angelova, and Tzvetan Semerdjiev. Mode-Set Adaptive IMM for Maneuvring Target Tracking In IEEE Trans. AES 35., 1999.

Angelova, Donka, and Boryana Vassileva. "Tracking Filters for Radar Systems with Correlated Measurement Noise." Information & Security: An International Journal 2 (1999): 90-101.

Semerdjiev, Tzvetan, Vesselin Jilkov, and Donka Angelova. Target Tracking Using Monte Carlo Simulation In IMACS Seminar on Monte Carlo Methods. Universite Libre de Bruxelle: Mathematics and Computers in Simulation , 1998.

Jilkov, Vesselin, Donka Angelova, and Tzvetan Semerdjiev. Filtering of Hybrid Systems: Bootstrap versus IMM In European Conf. on Circuit Theory and Design . Vol. 2., 1997.

Jilkov, Vesselin, Donka Angelova, and Tzvetan Semerdjiev. State Estimation of a Nonlinear Dynamic System by Parallel Algorithms In EUROMECH'96 ., 1996.

Angelova, Donka, Tzvetan Semerdjiev, and Vesselin Jilkov. State estimation of a nonlinear dynamic system by parallel algorithm In 2nd EUropean Nonlinear Oscilation Conference EUROMECH. Prague, 1996.

Angelova, Donka, Vesselin Jilkov, and Tzvetan Semerdjiev. "Tracking Maneuvering Target by Interacting Multiple model." Comtes rendus de l?Academie bulgare des Sciences 49 (1996): 37-40.

Semerdjiev, Tzvetan, Vesselin Jilkov, and Donka Angelova. "Parallel Adaptive Algorithm for Dynamic Object State Filtering." Compte rendus de l' Academie Bulgare des Sciences  47, no. 5 (1994): 33-36.