2025 1. MECHEV, Stoyan. Methods to enhance the security of mobile operating systems. Book based on Dissertation. Varna: NVNA, 2025. ISBN 978-619-7752-13-7 (pdf). Available from: https://doi.org/10.63662/diss-books/mechev-2025. 2. IVANOV, Pavel. Simulation study for the seakeeping qualities of a ship in operational conditions. Book based on Dissertation. Varna: NVNA, 2025. ISBN 978-619-7752-15-1 (e-book) (pdf), Available from: https://doi.org/10.63662/diss-books/ivanov-2025.
