The  = e+ + e– process. A useful and intuitive analogy to relativistic quantum mechanical explanation in undergraduate radiochemistry courses,

V. M. Petruševski, L. Pejov, The  = e+ + e– process. A useful and intuitive analogy to relativistic quantum mechanical explanation in undergraduate radiochemistry courses, Khimiya. Bulgarian Journal of Chemical Education, 14, 93–98 (2005).