Indoor Environment Group
"Soiling of building envelope surfaces and its effect on solar reflectance – Part III: Interlaboratory study of an accelerated aging method for roofing materials." Solar Energy Materials and Solar Cells 143 (2015) 581-590. .
How many replicate tests do I need? – Variability of cookstove performance and emissions has implications for obtaining useful results . Berkeley, CA: Lawrence Berkeley National Laboratory, 2013. .