KALCHEV, Shtelyan. Analysis and Application of Key Performance Indicators in the Competitive Environment of Real Estate Agencies. Construction Entrepreneurship and Real Property, [S. l.], v. 3, n. 1, p. 90–103, 2026. DOI: 10.56065/1xw7py86. Disponível em: https://cerp.ue-varna.bg/index.php/ojs1/article/view/82.. Acesso em: 5 jul. 2026.