1. Albright, L.D., 1995. Greenhouse lighting control to daily PPF integral, with energy and cost consequences (ASAE Paper 95-4487).
2. Operational planning in horticulture: optimal space-allocation in pot-plant nurseries using heuristic techniques;Annevelink;Journal of Agricultural Engineering Research,1992
3. Coordinated management of daily PAR integral and carbon dioxide for hydroponic lettuce production;Both;Acta Horticulturae,1998
4. Goto, E., Albright, L.D., Langhans, R.W., Leed, A.R. 1994. Plant spacing management in hydroponic lettuce production (ASAE Paper 94-4574).
5. The Glass House;Hix,1974