SUMMA-A LSA Integrated Developpement System. - Herbert Baier; Wolfgang Lenhard; Joachim Hoffmann; Wolfang Schneider (Stud. Inform. Univ., 2010)

Adaptive retrieval practice with multiple-choice questions in the university classroom. - Sven Greving; Wolfgang Lenhard; Tobias Richter (J. Comput. Assist. Learn., 2020)