Academic degree: DSc (Engineering)
Position: professor of the Department of Surveying and Geodesy, University of Mining and Geology “St. Ivan Rilski”, Sofia, Bulgaria
Research interests: mining geometry, surveying, mining, geology

Publications:

• Vulkanov N. G., Topalov S. Y., Yovkov K. B. The place and the role of the russian school in the bulgarian mine surveying theory and practices. Proceedings of the ISM 2019 - XVII International Congress of the International Society for Mine Surveying (ISBN 978-3- 86948-294-1) 26–30 September, Irkutsk, Russia.
• «Kurtselin E., Topalov ul., Mikhailov L., Galabov V., Dakov Stoian. Mechanized construction of chimneys during underground coal mining at the Bobov Dol mine. In: Proceedings of the 15th All-Russian Scient. and Tech. Conf. with Internat. participation.
• Kurtselin E., Markov I., Topalov ul., Katsarskii I., Vladimirov I., Ganov G. 130th Anniversary of the Bobov Dol mines. In: Proceedings of the 15th All-Russian Scient. and Tech. Conf. with Internat. Participation “Technology and practice of underground mining and construction”, October 05–08, 2020. Devin, Bulgaria. P. 156–167.
• Kurtselin E., St. Topalov. Accidents, disasters, fires and explosions at the stages of construction and operation of the Babino mine of the Bobov Dol mine: Proceedings of the National Scient. and Tech. Conf. with internat. participation “Automation in mining and metallurgy BULKAMK'18”. Sofia, Bulgaria, November 19, 2020.