CIORUȚA, B.-V.; POP, A. L.; COMAN, M. Implications of Philately in the Representation of the Ceahlau National Park from Romania - An Ecological Revised Case Study. Asian Journal of Geographical Research, [S. l.], v. 4, n. 2, p. 31–43, 2021. DOI: 10.9734/ajgr/2021/v4i230129. Disponível em: https://journalajgr.com/index.php/AJGR/article/view/57. Acesso em: 27 jul. 2021.