Publication - Journal Article A Comparison of 2pi and 4pi Photometric Testing of Directional and Omnidirectional Sources in an Integrating Sphere DOI https://doi.org/10.1080/15502724.2014.910126 Journal Article LEUKOS, vol. 10, iss. 4, pp. 183-191, 2014 Authors Eric Richman, Massine Merzouk Language English