Methods for decreasing uncertainties in LED photometryTimo Dönsberg, Tomi Pulli, Meelis Sildoja, Tuomas Poikonen, Hans Baumgartner, Farshid Manoocheri, Petri Kärhä and Erkki IkonenInternational Congress of Metrology, (2015) 11001DOI: https://doi.org/10.1051/metrology/20150011001