An Empirical Evaluation of Visual Metaphors in the Animation of Roles of Variables. - Tuija Stützle; Jorma Sajaniemi (Informing Sci. Int. J. an Emerg. Transdiscipl., 2005)

Lightweight techniques for structural evaluation of animated metaphors. - Jorma Sajaniemi; Tuija Stützle (Interact. Comput., 2007)