@article{Nacke2009Loading,
   author = {Nacke, Lennart and Lindley, Craig},
   title = {Affective Ludology, Flow and Immersion in a First- Person Shooter: Measurement of Player Experience},
   journal = {Loading...},
   volume = {3},
   number = {5},
   pages = {http://journals.sfu.ca/loading/index.php/loading/article/view/72},
   year = {2009}
}