Information below focuses on the physical structure of a greenhouse or controlled environment, and equipment in those facilities  that control lighting, irrigation, and shading systems.

Useful Conversion Tables:
Conversion tables, formulas and suggested guidelines for horticultural use (University of Georgia, 2012)
Photometric, radiometric, and quantum light units of measure:  A review of procedures for introconversion (Thimijan and Heins. 1983).
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Maintenance:
Summer greenhouse maintenance (Erwin, 2002).

Irrigation Systems:
A brief overview of various closed irrigation systems and other methods of reducing contaminated runnoff from greenhouses (Strefeler, 1991).
Irrigation for cut flower production (Ross and Healy, 1991).
Capillary mats are back (Paparazzi and Meyer, 2012)

Structures and Coverings:
Greenhouse structures and coverings (Oklahoma, HLA-6700) 
Greenhouse structures 
​Exploring greenhouse structures
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High Tunnels:
Minnesota high tunnel production manual for commercial growers
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Deep Winter Greenhouses:
Deep Winter Greenhouses
Cold Climate Greenhouse Resource

Greenhouse Cooling:
Greenhouse cooling (Willits, 1992).
Keeping cool with greenhouse shading (Currey, 2013)