Supporting the use of multiple representations in multimedia learning environments. - Maria Opfermann; Jan van der Meij; Shaaron Ainsworth; Tina Seufert; Markus Vogel; Roland Brünken; Jan L. Plass; Bruce D. Homer; Yan Wang; Minchi Kim; Catherine Milne; Trace Jordan; et al. (ICLS (3), 2008)

Learning with hypermedia: The influence of representational formats and different levels of learner control on performance and learning behavior. - Peter Gerjets; Katharina Scheiter; Maria Opfermann; Friedrich W. Hesse; Tessa H. S. Eysink (Comput. Hum. Behav., 2009)

Cognitive load and instructionally supported learning with provided and learner-generated visualizations. - Annett Schwamborn; Hubertina Thillmann; Maria Opfermann; Detlev Leutner (Comput. Hum. Behav., 2011)

Using the Learner-Generated Drawing Strategy: How Much Instructional Support Is Useful? - Annett Schmeck; Luisa Amelie Friedrich; Maria Opfermann; Detlev Leutner (ICLS, 2012)