@unpublished{eprints3421,
       booktitle = {Annual Meeting of the Human Brain Mapping Organization},
           title = {Effects of healthy aging on the brain functional response to cholinergic enhancement during a visual working memory task in humans},
           pages = {2000},
          author = {Emiliano Ricciardi and Pietro Pietrini and Ulderico Freo and Maura L. Furey},
             url = {http://eprints.imtlucca.it/3421/}
}