Carin Whitney Susanne Weis Timo Krings Walter Huber Murray Grossman Tilo Kircher Task-dependent Modulations of Prefrontal and Hippocampal Activity during Intrinsic Word Production. 697-712 2009 21 J. Cognitive Neuroscience 4 http://dx.doi.org/10.1162/jocn.2009.21056 db/journals/jocn/jocn21.html#WhitneyWKHGK09