Mattoo, B., S. Tanwar, R. Bhatia, M. Tripathi, and R. Bhatia. “CHRONIC TENSION-TYPE HEADACHE: MUSCLE OVERACTIVITY VERSUS DEFICIENT PAIN CONTROLS”. Asian Journal of Pharmaceutical and Clinical Research, vol. 11, no. 8, Aug. 2018, pp. 143-6, doi:10.22159/ajpcr.2018.v11i8.24433.