N. M. Kafadarova, S. V. Stoyanova-Petrova, S. I. Sotirov, D. V. Stoyanova and N. V. Vakrilov (2022). A Review of State of Health Battery Diagnostics Methods: Current Status and Future Challenges. 2022 XXXI International Scientific Conference Electronics (ET 2022), Sozopol, Bulgaria. pp. 1-5, doi: 10.1109/ET55967.2022.9920261. (Scopus)

N. V. Vakrilov and N. M. Kafadarova (2022). A Review of Supercapacitors State of Health Estimation Methods. 2022 XXXI International Scientific Conference Electronics (ET 2022), Sozopol, Bulgaria. pp. 1-5, doi: 10.1109/ET55967.2022.9920314. (Scopus)

N. Kafadarova, S. Sotirov, A. Stojnova, S. Stoyanova-Petrova, D. Stoyanova and I. Petrov, "State of Health Determination of Batteries by Analyzing the Rate of Increase of Their Temperature," 2022 IEEE 9th Electronics System-Integration Technology Conference (ESTC), Sibiu, Romania, 2022, pp. 492-497, doi: 10.1109/ESTC55720.2022.9939440. (Scopus)

S. Sotirov, N. Kafadarova, A. Stoynova, S. Stoyanova-Petrova, D. Stoyanova, N. Mileva, S. Rizanov. "Battery Thermal Image Sequence Processing," 2022 13th National Conference with International Participation (ELECTRONICA), Sofia, Bulgaria, 2022, pp. 1-4, doi: 10.1109/ELECTRONICA55578.2022.9874375. (Scopus)

S. Stoyanova-Petrova, D. Stoyanova, N. Kafadarova, S. Sotirov (2022) INTEGRATING RESEARCH AND EDUCATION: “Hybrid And Fusion Prediction Оf The Functionality Of Energy Converting Elements” Project, ICERI2022 Proceedings, pp. 7945-7948. doi: 10.21125/iceri.2022.2038 (Web of Science)

A. Stoynova, B. Bonev, N. Kafadarova and S. Rizanov, "Infrared measurements of temperature anomalies in electronic devices," 2022 IEEE 9th Electronics System-Integration Technology Conference (ESTC), Sibiu, Romania, 2022, pp. 509-515, doi: 10.1109/ESTC55720.2022.9939431. (Scopus)

S. Rizanov, A. Stoynova, N. Kafadarova, S. Sotirov, B. Bonev, "A Hybrid Portable Battery Pack Screening System", 46th International Spring Seminar on Electronics Technology (ISSE), Timisoara, Romania, 10-14 May, 2023 (Scopus)

S. Sotirov, N. Kafadarova, A. Stoynova, S. Rizanov, S. Stoyanova-Petrova, D. Stoyanova, F. Herbst, "Method for Non-radiometric Thermal Video into Radiometric Thermal Images, Conversion", 46th International Spring Seminar on Electronics Technology (ISSE), Timisoara, Romania, 10-14 May, 2023(Scopus)

N. Kafadarova, S. Sotirov, A. Stoynova, S. Rizanov and B. Bonev, "Deep Neural Network Estimation of Battery Cell Age," 2023 XXXII International Scientific Conference Electronics (ET), Sozopol, Bulgaria, 2023, pp. 1-5, doi: 10.1109/ET59121.2023.10279758.

A. Stoynova, B. Bonev, S. Rizanov, N. Kafadarova and S. Sotirov, "Utilization of Infrared Thermography for Battery Performance Inspection," 2023 XXXII International Scientific Conference Electronics (ET), Sozopol, Bulgaria, 2023, pp. 1-5, doi: 10.1109/ET59121.2023.10278768.

B. B. Bonev, S. M. Rizanov and A. V. Stoynova, "SPICE modeling of the Li-ion battery pack's charge behavior using QUCS-S software," 2023 XXXII International Scientific Conference Electronics (ET), Sozopol, Bulgaria, 2023, pp. 1-6, doi: 10.1109/ET59121.2023.10279734.

D. V. Stoyanova, S. V. Stoyanova-Petrova, N. V. Vakrilov, N. S. Mileva and V. Z. Mengov, "State of health estimation of Lithium-ion batteries: A review of data-driven methods," 2023 XXXII International Scientific Conference Electronics (ET), Sozopol, Bulgaria, 2023, pp. 1-5, doi: 10.1109/ET59121.2023.10279026 Electronic ISBN:979-8-3503-0200-4

S. Rizanov, A. Stoynova, N. Kafadarova, S. Sotirov, B. Bonev, "Machine Learning Assessment of Battery State-of-Health", WORLDS4, 2023, London, United Kingdom, 21-24 August., Springer, Lecture Notes in Networks and Systems.

Kafadarova, N.; Sotirov, S.; Herbst, F.; Stoynova, A.; Rizanov, S. A System for Determining the Surface Temperature of Cylindrical Lithium-Ion Batteries Using a Thermal Imaging Camera. Batteries 2023, 9, 519. https://doi.org/10.3390/batteries9100519

Sotirov, S., & Kafadarova, N. (2026). A Novel Method for Determining the Specific Heat Capacity of Cylindrical Li-Ion Batteries. Batteries, 12(7), 226.IF: 6.3 (2025); квартил: Q1; SJR: 0. 921 (2025)

Rizanov, S., Stoynova, A., & Mihov, G. (2026). Toward Trustworthy and Transferable SOH/RUL Estimation for Lithium-Ion Batteries: A Critical Review and Multi-Fidelity Validation Framework from Laboratory Cells to Real-World Packs. Batteries, 12(7), 255. IF: 6.3 (2025); квартил: Q1; SJR: 0. 921 (2025) https://doi.org/10.3390/batteries12070255

Kafadarova, N., Stoyanova-Petrova, S., & Stoyanova, D. (2026). Research-Based Learning in Engineering Education: A Case Study. Education Sciences, 16(1), 59. IF: 3.5 (2025); квартил: Q1; SJR: 0. 878 (2025) https://doi.org/10.3390/educsci16010059

Rizanov, S., Stoynova, A., Kafadarova, N., Sotirov, S., Bonev, B., & Marinkova, V. (2024). The Utility of Evolutionary and Genetic Computing in Battery Modeling. 2024 XXXIII International Scientific Conference Electronics (ET), 1–6. https://doi.org/10.1109/ET63133.2024.10721494

Stoynova, A., Bonev, B., & Rizanov, S. (2025). Making Informed Decisions in Infrared Thermography Testing of Batteries. 2025 XXXIV International Scientific Conference Electronics (ET), 1–5. https://doi.org/10.1109/ET66806.2025.11204083

Bonev, B., Rizanov, S., & Stoynova, A. (2025). Charge and Discharge Behavior Modelling and Simulation of Li-Ion Batteries Using QUCS-S Software. Engineering Sciences, LXII(4), pp. 69-80. https://doi.org/10.7546/EngSci.LXII.25.04.06

Stoynova, A., Mihov, G., Kafadarova, N., & Sotirov, S. (2025). A Comparative Analysis of Battery Performance Prediction Models. Engineering Sciences, LXII(4), pp. 95-108. https://doi.org/10.7546/EngSci.LXII.25.04.08

A. Stoynova, S. Rizanov, B. Bonev, "Hierarchical Trustworthiness Ontology for Thermographic Battery Prognostics", 17th National Conference with International Participation “ELECTRONICA 2026”, 4-6 June, Sofia, Bulgaria. https://e-university.tu-sofia.bg/e-conf/?r=898