Ira Rahmawati, Ratna Dewi, Sumirah Budi Pertami, Budiono, and Ester Pasaribu, “HAND EXERCISE USING A RUBBER BALL INCREASES GRIP STRENGTH IN PATIENTS WITH NON-HAEMORRHAGIC STROKE”, The Malaysian Journal of Nursing, vol. 12, no. 3, pp. 32-36, Jan. 2021.