@article{Hills2008,
author = {Hills, T.T. and Todd, P.M. and Goldstone, R.L.},
title= {Search in external and internal spaces: Evidence for generalized cognitive search processes},
year = {2008},
doi = {10.1111/j.1467-9280.2008.02160.x},
journal = {Psychological Science},
volume = {19},
number = {8},
pages = {802--808},
}