Amalina, N. and Setiawati, E. (2021) “Effectiveness of Deep Cervical Flexor (DCF) Exercise on Neck Functional Scores in Helicopter Crew with Mechanical Neck Pain”, Surabaya Physical Medicine and Rehabilitation Journal, 3(2), pp. 71–76. doi: 10.20473/spmrj.v3i2.24272.