by Bergin, Rolf, Youngblood, Patricia, Ayers, Mary K., Boberg, Jonas, Bolander, Klara, Courteille, Olivier, Dev, Parvati, Hindbeck, Hans, Leonard, Edward E., Stringer, Jennifer R., Thalme, Anders, Fors, Uno G. H.
Published in Journal of educational computing research (2003)