@article{Nackeetal2009c,
   author = {Nacke, Lennart E. and Nacke, Anne and Lindley, Craig A.},
   title = {Brain Training for Silver Gamers: Effects of Age and Game Form on Effectiveness, Efficiency, Self-Assessment, and Gameplay Experience},
   journal = {CyberPsychology & Behavior},
   volume = {12},
   number = {5},
   pages = {493-499},
   year = {2009}
}