* [http://www.vpri.org/pdf/etoys_n_learning.pdf Squeak Etoys, Children & Learning] (PDF) Alan Kay, VPRI Research Note RN-2005-001, Viewpoints Research Institute 2005 | * [http://www.vpri.org/pdf/etoys_n_learning.pdf Squeak Etoys, Children & Learning] (PDF) Alan Kay, VPRI Research Note RN-2005-001, Viewpoints Research Institute 2005 |