@article{Kwisthout12,
  author 	= {J. Kwisthout},
  title 	= {Relevancy in Problem Solving: A Computational Framework},
  journal 	= {The Journal of Problem Solving},
  year 		= {2012},
  volume 	= {5},
  pages 	= {18 - 33},
  number 	= {1}
}