Ryohei Nakatsu Yurika Nagai Kojzi Miyazaki Takenori Wama An Interactive Folktale System and an Authoring System That Supports Its Realization. 1 2007 conf/edutainment/2007 Edutainment http://dx.doi.org/10.1007/978-3-540-73011-8_1 db/conf/edutainment/edutainment2007.html#NakatsuNMNW07