@inproceedings{9ef3e795838841a59a3b7950cf82a7a6,
title = "USER EVALUATION OF EIGHT LED LIGHT SOURCES WITH DIFFERENTSPECIAL COLOUR RENDERING INDICES R9",
abstract = "In this study we evaluated the influence of the special colour rendering index R9 on subjective red colour perception and Caucasian skin appearance among untrained test subjects. The light sources tested are commercially available LED based light sources with similar correlated colour temperature and general colour rendering index, but with varying R9. It was found that the test subjects in general are more positive towards light sources with higher R9. The shift from a majority of negative responses to a majority of positive responses is found to occur at R9 values of ~20.",
author = "Jakob Markvart and Anne Iversen and {\'A}sta Logad{\'o}ttir and Corell, {Dennis Dan} and Anders Thorseth and Carsten Dam-Hansen",
year = "2013",
month = apr,
language = "English",
series = "C I E. Publication",
pages = "496--505",
booktitle = "Proceedings of CIE Centenary Conference {"}Towards a New Century of Light{"}",
publisher = "CIE",
note = "Towards a new century of light ; Conference date: 12-04-2013 Through 19-04-2013",
}