Papadopoulos, Dimitrios Nikolaou. “A HOLISTIC APPROACH TO EMOTIONAL INTELLIGENCE: THE NINE-LAYER MODEL ”. Advanced International Journal of Material Science and Engineering (AIJMSE) 7, no. 4 (October 24, 2023): 21–39. Accessed July 7, 2025. https://zapjournals.com/Journals/index.php/aijmse/article/view/1354.