Daesub Yoon N. Hari Narayanan SooCheol Lee Oh-Cheon Kwon Exploring the Effect of Animation and Progressive Revealing on Diagrammatic Problem Solving. 226-240 2006 conf/diagrams/2006 Diagrams http://dx.doi.org/10.1007/11783183_31 db/conf/diagrams/diagrams2006.html#YoonNLK06