Yuichi Itoh Shintaro Akinobu Hiroyasu Ichida Ryoichi Watanabe Yoshifumi Kitamura Fumio Kishino TSU.MI.KI: Stimulating Children's Creativity and Imagination with Interactive Blocks. 62-70 2004 conf/c5/2004 C5 http://csdl.computer.org/comp/proceedings/c5/2004/2166/00/21660062abs.htm db/conf/c5/c5-2004.html#ItohAIWKK04