Lazov, Lyubomir, Erika Teirumnieka, Edmunds Teirumnieks, Nedka Atanasova, and Tsanko Karadzhov. “ON-LINE PROFESSIONAL TRAINING FOR WORKERS WITH THE MOODLE SYSTEM TO IMPROVE PROFESSIONAL SKILLS IN GREEN CONSTRUCTIONS”. SOCIETY. INTEGRATION. EDUCATION. Proceedings of the International Scientific Conference 5 (May 21, 2019): 393–402. Accessed May 27, 2024. https://journals.ru.lv/index.php/SIE/article/view/3908.