S. Zaher Yahya, B. Kazem Abdul Rida, and O. Waleed Abdulkareem, “The effect of a laser device on some biomechanical variables of the rotational phase in the achievement of 100 m freestyle swimming for the Iraqi team (16-18 years old)”, sci. j. sport perform., vol. 3, no. 4, pp. 507–512, Jul. 2024.