Khandanyan, Siranush, and Liza Mardoyan. “Functional-Communicative Study of Adversative and Causal Discourse Markers”. Armenian Folia Anglistika, vol. 9, no. 1-2 (11), Oct. 2013, pp. 62-67, https://doi.org/10.46991/AFA/2013.9.1-2.062.