TY  - RPRT
TI  - Gaussian beam and pulsed-beam dynamics: complex-source and complex-spectrum formulations within and beyond paraxial asymptotics.
AU  - E Heyman
AU  - L B Felsen
PY  - 2001
DO  - 10.1364/josaa.18.001588
UR  - https://pubmed.ncbi.nlm.nih.gov/11444551/
ID  - 11444551
ER  -