BIVAINIS, Juozas; DREJERIS, Rolandas. Improvement of the pattern of new services development. Business: Theory and Practice, [S. l.], v. 7, n. 1, p. 14–21, 2006. DOI: 10.3846/btp.2006.02. Disponível em: https://journals.vilniustech.lt/index.php/BTP/article/view/11635. Acesso em: 10 may. 2025.