ПЕЛЕЩИШИН, О. П. Cost optimization for marketing in online communities. Eastern-European Journal of Enterprise Technologies, [S. l.], v. 3, n. 2(63), p. 53–56, 2013. DOI: 10.15587/1729-4061.2013.14449. Disponível em: https://journals.uran.ua/eejet/article/view/14449. Acesso em: 28 jul. 2024.