TY  - RPRT
TI  - Design method for four-reflector type beam waveguide systems
AU  - Betsudan, S.
AU  - Katagi, T.
AU  - Urasaki, S.
PY  - 1986
UR  - https://ntrs.nasa.gov/citations/19870009255
ID  - 19870009255
ER  -