TY  - RPRT
TI  - Phase-matching segmented wigglers in free-electron lasers.
AU  - H P Freund
PY  - 2004
DO  - 10.1103/physreve.70.015501
UR  - https://pubmed.ncbi.nlm.nih.gov/15324119/
ID  - 15324119
ER  -