DUŠAN PAVLŮ. The Beginnings of Market Research and Measurement of Market Advertising Effectiveness. Communication Today, [S. l.], v. 7, n. 1, 2025. DOI: 10.0000/3fvxjq47. Disponível em: https://communicationtoday.fmk.ucm.sk/index.php/ct/article/view/332.. Acesso em: 19 apr. 2026.