Mohamed AbdelKader Toama, Mona Hazem Hamed AbdelRaof. “Hair Follicle Biology and Shaft Structure”. The International Journal of Multiphysics, vol. 18, no. 3, Sept. 2024, pp. 5634 -38, https://mail.themultiphysicsjournal.com/index.php/ijm/article/view/2247.