TY - CHAP A1 - Wahl, Harald A1 - Niederwieser, Martin A1 - Vollnhofer, Sonja A1 - Sohal, Shveta A1 - Schwarz, Sebastian A1 - Mense, Alexander T1 - Tools for Annotating Documents in E-Learning: An Evaluation T2 - Proceedings of the World Conference on E-Learning in Corporate, Government, Healthcare, and Higher Education KW - eLearning Y1 - 2018 SP - 21 EP - 24 ER -