@misc{indiciaecd0a1aeb1e38,
  title = {Light emitting diodes as a plant lighting source},
  author = {Bula, R. J. and Tennessen, D. J. and Morrow, R. C. and Tibbitts, T. W.},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19960011713},
  note = {Source identifier: 19960011713}
}