The book was written within six months in the centenary year of the discovery of electron, and was self-published in nontraditional form in 1997. In 2006 it was placed at lulu.com
E. J. Post's review of the work was published in Physics Essays, volume 12 (1999).
Radical ideas: massless electron and electronic charge as fractional spin.
Recent paper in Physica Scripta volume 96 (2021) and preprint arXiv.org: 1906.05537 present potential of this work for unification and particle physics.
First two chapters may be useful for MSc students specializing in high energy physics or particle physics.