BIVAINIS, Juozas; DAUKŠEVIČIŪTĖ, Irena. An optimisation model for the marketing programmes of companies. Business: Theory and Practice, [S. l.], v. 14, n. 3, p. 228–239, 2013. DOI: 10.3846/btp.2013.24. Disponível em: https://journals.vilniustech.lt/index.php/BTP/article/view/8458. Acesso em: 11 may. 2025.