Exact Solution for Some Rotational Motions of Fractional Oldroyd-B Fluids Between Circular Cylinders. Punjab Univ. J. Math. [Internet]. 2025 May 16 [cited 2025 Jun. 29];50(4):39-5. Available from: https://pujm.pu.edu.pk/index.php/pujm/article/view/391