NIKOLAEVA, Velislava. ORGANIZATIONAL ASPECTS AND METHODOLOGICAL FRAMEWORK FOR DEVELOPING INSTRUCTIONAL MATERIALS IN VOCATIONAL HIGH SCHOOLS DESIGNATED AS CENTERS OF EXCELLENCE. E-Journal VFU, [S. l.], n. 26, p. 1089–1108, 2026. DOI: 10.53606/evfu.26.1089-1108. Disponível em: https://ejournal.vfu.bg/index.php/vfu/article/view/419. Acesso em: 5 nov. 2026.