5Bula R.J.,R.C.Morrow,T.W.Tibbits and D.J.Barta.Light-emitting diodes as a radiation source for plants.Hortscience 1991,26(2):203-205.
6Barta,D.J.,Tibbitts,T.W.,Bula,R.J.and Morrow,T.W.Evaluation of lighting-emitting diodes characteristics for a space-based plant irradiation source.Advances Space Res.1992,12:141-149.
8Fukai,S.,Fujiwara,K.,Okzmoto,K.,Hasegawa,A.,Goi,M.Effects of red and blue lights on germination and protocorm growth of Calanthe satsuma.Lindleyana,1997,12:169~171.
9Fang W,Jao R C.Simulation of light environment with fluorescent lamps and design of a movable light mounting fixture in a growing room.Acta Horticulture,1996,440:181-186.
10Fang,W.,R.C.Jao and D.H.Lee.Artificial lighting apparatus for young plants using light emitting diodes as light source.US patent no.:US 6474838 B2.2002.