Leonidovich, Sokolnikov Mikhail, and Akhmetov Alexey Lerunovich. “Planck Constant”. IJRDO-Journal of Applied Science 3, no. 3 (March 31, 2017): 42-53. Accessed December 23, 2024. http://cpcontacts.ijrdo.org/index.php/as/article/view/1226.