1. Lochtdoorlatendheid van met vlakka materialen bedeckte warenhuizen;Stoffers,1967
2. Light Transmission and Photosynthesis in Greenhouses;Kozai,1978
3. Light levels in insulated greenhouses;Turkewitsch;Joint Meeting ASAE and CSAE,1971
4. The transmission of diffuse light by a sloping roof;Bowman;J. agric. Engng Res.,1970
5. A contribution to glasshouse design;Smith;Agric. Meteorol.,1971