[Lecture Notes in Physics] Invariant Wave Equations Volume 73 || Method of characteristics in the external field problem or How to recognize an acausal equation when you see one
Velo, Giorgio, Wightman, Arthur S.Volume:
10.1007/BF
Year:
1978
Language:
english
DOI:
10.1007/bfb0032332
File:
PDF, 769 KB
english, 1978