Chengelova, E., Nakova, A., Aleksandrova, Sv., Gerganov, A. (2024). Factor Determinacy of the Shadow Economy. Monograph, 488 pages. Prof. Marin Drinov Academic Publishing House, Bulgarian Academy of Sciences. ISBN 978-619-245-409-8.
Chengelova, E., Aleksandrova, Sv., Gerganov, A., Ivanova, Iv. (2023). Public Opinion: Essence, Genesis, Factor Determinacy and Interpretations. Monograph, 328 pages. Prof. Marin Drinov Academic Publishing House, Bulgarian Academy of Sciences. ISBN 978-619-245-337-4.
Chengelova, E. (2024). Bulgarians and the Shadow Economy: Psychological Attitudes and Actual Inclusion. Papers of the Bulgarian Academy of Sciences, Vol. 1, pp. 44–59. (Indexed in ERIH PLUS). ISSN (print): 2367-6248; ISSN (online): 2603-4832.
Chengelova, E. (2024). Shadow Economy Tolerance Index (SETI). In: Factor Determinacy of the Shadow Economy: Empirical Research, Results, Interpretations and Policy Recommendations. Prof. Marin Drinov Academic Publishing House, pp. 24–37.
ISBN 978-619-245-413-5 (print), ISBN 978-619-245-414-2 (online).
Chengelova, E. (2023). Economic Deviants Among Us: Interpretation of Attitudes Shaping the Propensity for Deviant Behaviour in the Economic Sphere. Sociological Problems, Vol. 55, Issue 2, pp. 537–561.
Project under Contract BG05SFPR001-3.004-0006-C01: “Training Doctoral Students to Study and Transform the Labour Market in Line with Industry 5.0 and the Twin Transition.”
Project under Contract No. KP-06-N85/12 (05.12.2024): “New Forms of Employment and the Development of Digital Skills: Key Factors for the Successful Labour Market Integration of NEET Youth.”
Work Package 1.7 under Contract DO 1-206/08.11.2024: “Assessment of the Socio-Economic Impact of the Extraction, Processing and Application of Critical and Strategic Raw Materials.” National Research Programme: “Critical and Strategic Raw Materials for Green Transition and Sustainable Development.”
Project under Agreement between the Ministry of Education and Science and the Bulgarian Academy of Sciences BG05SFPR002-1.020-0001-C01:
“Improving Policy Responses to Demographic Change.” Contracting Authority: Ministry of Labour and Social Policy.
