In search of common ground: A task conceptualization to facilitate the design of (e)learning environments with design patterns. - Ilya Zitter; Geert Kinkhorst; Robert-Jan Simons; Olle ten Cate (Comput. Hum. Behav., 2009)

The role of professional objects in technology-enhanced learning environments in higher education. - Ilya Zitter; Elly De Bruijn; Robert-Jan Simons; Olle ten Cate (Interact. Learn. Environ., 2012)