TY  - RPRT
TI  - Light-emitting diodes as a radiation source for plants
AU  - Bula, R. J.
AU  - Morrow, R. C.
AU  - Tibbitts, T. W.
AU  - Barta, D. J.
AU  - Ignatius, R. W.
AU  - Martin, T. S.
PY  - 1991
UR  - https://ntrs.nasa.gov/citations/20040090327
ID  - 20040090327
ER  -