1. Barrett, P., Zhang, Y., Davies, F., & Barrett, L. (2015). Clever rooms—Summary report of the HEAD Project. University of Salford, Manchester. ISBN 978-1907842634.
2. Boyce, P. R. (2014). Human factors in lighting. 3rd edition. CRC Press. Boca Raton, Florida. ISBN 978-1439874882.
3. Boyce, P. R. (2014b). Editorial: Light distribution—a missing variable. Lighting Research and Technology, 46, 617. https://doi.org/10.1177/1477153514556940.
4. Flynn, J. E., Spencer, T. J., Martyniuk, O., Hendrick, C. (1973). Interim study of procedures for investigating the effect of light on impression and behavior. Journal IES—Transaction, 87–94. http://media.ies.org/docs/research/100papers/040.pdf.
5. Flynn, J. E. (1977). A study of subjective responses to low energy and non-uniform lighting systems. Journal IES Lighting Design + Application, 7, 167–179.