TY  - RPRT
TI  - Comment on "Diffraction-free beams"
AU  - D DeBeer
AU  - SR Hartmann
AU  - R Friedberg
PY  - 1987
DO  - 10.1103/physrevlett.59.2611
UR  - https://pubmed.ncbi.nlm.nih.gov/10035597/
ID  - 10035597
ER  -