One click away is too far! How the presentation of cognitive learning aids influences their use in multimedia learning environments. - Tatjana Ruf; Rolf Ploetzner (Comput. Hum. Behav., 2014)

The role of student-generated externalizations in strategic multimedia learning and how current (web-)technology fails to support learner engagement. - Rolf Ploetzner; Benjamin Fillisch; Patrick-André Gewald; Tatjana Ruf (Interact. Learn. Environ., 2016)