Hapsari, Shindi, et al. “Effectiveness of Range of Motion (ROM) Fingers and Spherical Grip to Extremity Strength in Non Hemorrhagic Stroke Patients”. STRADA Jurnal Ilmiah Kesehatan, vol. 9, no. 2, Nov. 2020, pp. 1650-6, doi:10.30994/sjik.v9i2.509.