TY  - RPRT
TI  - Electromagnetic Fields Derived from Non-Commuting Potentials.
AU  - B Cassen
PY  - 1931
DO  - 10.1073/pnas.17.7.430
UR  - https://pubmed.ncbi.nlm.nih.gov/16577379/
ID  - 16577379
ER  -