Lazar Georgiev
- (2023): Footbridges Over Varbitza River. Vorgetragen bei: IABSE Symposium: Long Span Bridges, Istanbul, Turkey, 26-28 April 2023.
- (2023): Momchilgrad-Sedlare Pedestrian Suspension Bridge. Vorgetragen bei: IABSE Symposium: Long Span Bridges, Istanbul, Turkey, 26-28 April 2023.
- (2023): 130 Years Old Stambolov’s Bridge on Yantra River: the Symbol of Modern Development and Technical Innovation of Veliko Tarnovo. Vorgetragen bei: IABSE Symposium: Long Span Bridges, Istanbul, Turkey, 26-28 April 2023.
- (2023): Time History Analysis of Simple Supported Steel Concrete Beam Regarding Creep Phenomena, using Volterra Integral Equations. Vorgetragen bei: IABSE Symposium: Long Span Bridges, Istanbul, Turkey, 26-28 April 2023.
- (2023): 40 Years History about Structure, Design and Construction of the First Steel Orthotropic Bridge in Sofia. Vorgetragen bei: IABSE Symposium: Long Span Bridges, Istanbul, Turkey, 26-28 April 2023.
- (2022): Footbridges over Varbitza River – the only Link Between Remote Villages and the Railway. Vorgetragen bei: Footbridge 2022: Creating Experience, Madrid, Spain, 07-09 September 2022.
- (2021): Condition assessment of several bridges in Sofia based on visual inspection and as-built drawings. Vorgetragen bei: IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021.
- (2021): Exploitation problems with particular road and railway composite bridges in Bulgaria. Vorgetragen bei: IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021.
- (2021): Equivalent nosing force for a steel railway bridge based on in situ measurements. Vorgetragen bei: IABSE Congress: Structural Engineering for Future Societal Needs, Ghent, Belgium, 22-24 September 2021.
- (2021): Laboratory tests on strengthening steel and concrete elements with high-strength concrete. Vorgetragen bei: IABSE Congress: Resilient technologies for sustainable infrastructure, Christchurch, New Zealand, 3-5 February 2021.
- (2018): Reinforced structures type "Filler Beam" – advantages in reconstruction of bridge superstructures.. In: IOP Conference Series: Materials Science and Engineering, v. 419 (September 2018).
- Comparison of FEM Analysis And Experimental Investigation for A 168m Long Steel Double Twin Truss Launching Gantry Subjected To Different Load And Support Conditions. In: IOP Conference Series: Materials Science and Engineering, v. 419 (September 2018). (2018):