@article{2013-JMMT-LightAndThePerception,
   author = {Molenaar, Niels and Hu, Jun},
   title = {Light and the Perception of Cleanliness in Public Spaces},
   journal = {Journal of Man, Machine and Technology},
   volume = {2},
   number = {1},
   pages = {63-70},
   PDF = {http://www.drhu.eu/publications/2013-JMMT-LightAndThePerception.pdf},
   year = {2013}
}