RAHIMIAN, Jalal. Obligatory, Optional and Contrastive Occurrences of KE Modern Persian. Linguistica Atlantica, [S. l.], v. 21, p. 137–151, 1999. Disponível em: https://journals.lib.unb.ca/index.php/la/article/view/22460. Acesso em: 6 may. 2024.