Sadeghniiat-Haghighi, Khosro, Omid Aminian, Areza Najafi, Ania Rahimi-Golkhandan, and Alireza Zahabi. “Sleep Quality in Shift Workers of Offshore Petroleum Industries”. Journal of Sleep Sciences 3, no. 1-2 (January 7, 2019): 36-40. Accessed December 12, 2019. http://jss.tums.ac.ir/index.php/jss/article/view/102.