1. ASHRAE . 2009 . Handbook of fundamentals , Atlanta , GA : American Society for Heating, Refrigerating, and Air-conditioning Engineers .
2. ATI
.
2009
.
“
Experimental U-factor research to validate NFRC simulation procedure for tubular daylighting devices. Final Report
”
.
York PA
:
Architectural Testing Inc.
.
3. CEC
.
2011
.
“
California's energy efficiency standards for residential and nonresidential buildings. Title 24 Part 6 of the California Code of Regulations. California Energy Commission
”
.
www.california.gov/title24
4. The effect of top and bottom lids on natural convection inside a vertical cylinder
5. CIE
.
2006
.
“
Tubular daylight guidance systems CIE 173:2006. Technical Report ISBN 3 901 906 49 5
”
.
Technical Committee TC3–38 International Commission on Illumination Austria