1. Kirilov F, Lyubenov D Proc. Conf. Proceedings of University of Ruse 2018 Volume 56, Book 4 (University of Ruse, 2018) p148
2. Lyubenov D, Kirilov F, Atanasova-Petrova P, Balevski I A study of vehicles acceleration in real traffic flow International Scientific Conference TRANSPORT PROBLEMS, 2018, ISBN 978-83-935232-6-9
3. Mladenov G Methodology for reconstruction of conventional intersection into roundabout Federation of scientific and technical unions in Bulgaria scientific and technical union of transport, 2017
4. Mladenov G Proc. Conf. Sixth National Conference on Roads with International Participation 2013 Investigation of traffic flows between the entrances and exits of roundabouts, 2013
5. Miletiev R, Iontchev E, Yordanov R, Proc. Conf. The Ways to Connect the Future, TELECOM 2019 ISSN 2603-3496 (Union of Electronics, Electrical Engineering and Telecommunications, 2019) p23