Has, I., S. Miclaus, and A. Has. “Explaining the Nature of the Mass M of Submicroparticles and the Phenomenon of Mass Variation With Velocity V in Ether”. European Journal of Applied Physics, vol. 3, no. 1, Feb. 2021, pp. 48-58, doi:10.24018/ejphysics.2021.3.1.48.