Tayebeh Norouzi, The Phonology and Phonetics of Second Language Intonation in Case of “Downstep”. journal = {International Journal of Cognitive and Language Sciences}, [online]. World Academy of Science, Engineering and Technology. August 2018, vol. 141(9). 1164 - 1170 [viewed 28 April 2024]. Available from: https://publications.waset.org/pdf/10009466.