SYCHROVÁ, Lucie; ŠIMBEROVÁ, Iveta. Key performance indicators as a basic element for a marketing efficiency measurement. International Scientific Conference “Business and Management”, [S. l.], v. 7, p. 1–6, 2012. DOI: 10.3846/bm.2012.064. Disponível em: https://conferences.vilniustech.lt/index.php/BM/article/view/770. Acesso em: 13 sep. 2026.