Kulikowski J. J., Daugirdienė A., Panorgias A., Murray I. J., Stanikūnas R., and Vaitkevičius H. “Stages for Extracting Colour Information: How the Brain Processes Colour”. Psichologija, Vol. 39, Jan. 2009, pp. 71-92, doi:10.15388/Psichol.2009.0.2593.