Nikolova Hr. Въздушният транспорт в България. Състояние и перспективи за развитие. Издателски комплекс – УНСС: София; 2017. (Air transport in Bulgaria. Status and prospects for development. Publishing complex - UNSS: Sofia; 2017).
Dimitrios Z., Suckowb W.M. & Pechlivanisc K. The Implementation of Competency-Based Training and Assessment (CBTA) Framework in Aviation Manpower Planning. ScienceDirect Available online at www.sciencedirect.com Transportation Research Procedia; 2022.