Дарина Нитова, Yasen Markov. "CHALLENGE FOR THE IMPLEMENTATION OF THE DO NOT SIGNIFICANTLY HARM PRINCIPLE IN THE EUROPEAN UNION FUNDED RAIL PROJECTS IN BULGARIA." SGEM International Multidisciplinary Scientific GeoConference- EXPO Proceedings; 22nd SGEM International Multidisciplinary Scientific GeoConference Proceedings 2022 (2022): 761-768. https://doi.org/10.5593/sgem2022/5.1/s23.095