"The Effect of Luminaire Type and Spacing on Visibility Levels in Unobstructed Spaces." IEEE-IAS Annual Conference. San Diego, CA, 1989. LBL-30178..
"Thermally Efficient Compact Fluorescent Fixture Systems." IEA/ENEL Conference on Advanced Technologies for Electric Demand-Side Management. Sorrento, Italy, 1990. LBL-30180..
"Fixture Efficiency Program." Association of Energy Engineers Conference. Anaheim, CA, 1991. LBL-30646..
"Developing Practical Reflectors for Cylindrical and Compact Fluorescent Lamps Based on Nonimaging Optics." Annual IEEE-IAS Conference. Toronto, Ontario, Canada, 1993. LBL-35253..
"An In-Situ Photometric and Energy Analysis of a Sulfur Lamp Lighting System." Illuminating Engineering Society of North America. New York, NY, 1995. LBL-37006..
"A Photometric and Energy Assessment of a Novel Lighting System." 3rd European Conference on Energy-Efficiency Lighting, Right Light Three. Newcastle Upon Tyne, England, 1995. LBL-37012..