Allison Druin Glenda Revelle Benjamin B. Bederson Juan Pablo Hourcade Allison Farber Juhyun Lee Dana Campbell A collaborative digital library for children. 239-248 2003 19 J. Comp. Assisted Learning 2 http://dx.doi.org/10.1046/j.0266-4909.2003.00024.x db/journals/jcal/jcal19.html#DruinRBHFLC03