SFI5876--2021: P.A.M. Dirac, Quantised Singularities in the Electromagnetic Field; Proc. Royal Soc. London A133, issue 821 (1931) 60-72

P.A.M. Dirac, Quantised Singularities in the Electromagnetic Field; Proc. Royal Soc. London A133, issue 821 (1931) 60-72