Reference:
  Author: Sebastiaan Mathôt and Daniel Schreij and Jan Theeuwes
  Title: "OpenSesame: An open-source, graphical experiment builder for the social sciences"
  Journal: Behavior Research Methods
  Year: 2012
  Volume: 44
  Number: 2
  Pages: 314-324
  DOI: 10.3758/s13428-011-0168-7
  PMID: 22083660
  URL: http://www.ncbi.nlm.nih.gov/pubmed/22083660/
  eprint: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3356517/