M. Jaafar Ali, ملاک, S. Muhamed Nuri, صایغن, S. Muhamed Rajab, and شنای, “Studying the Parameter Gradient Energy Coefficient of Polyethylene Glycol as a Function of Molecular Weight in conjunction with Freed Contribution”, EDUSJ, vol. 29, no. 2, pp. 201–215, Mar. 2020.