Research and Supervision 

Sayer, I., & Mahmood, D. (2020). Selectivity in Learning: A Case Study of EFL Students in Kurdistan Region – Iraq. Dirasat: Human and Social Sciences, 47 (4). 320-332.

Mahmood, D. K. (2016). An evaluation of writing skills of EFL learners in Kurdistan region of Iraq. International journal of language and linguistics, 4(1), 14-24. 

Mahmood, D. K. (2016). Investigating English proficiency of a Kurdish and a German ESL learner: A case study. Journal of Foreign Languages, 4 (2), 21-29.