TY - CHAP T1 - SALMON: Sharing, Annotating and Linking Learning Materials Online T2 - Lecture Notes in Computer Science Y1 - 2019 A1 - Farbod Aprin A1 - Sven Manske A1 - H. Ulrich Hoppe JF - Lecture Notes in Computer Science PB - Springer International Publishing UR - https://doi.org/10.1007%2F978-3-030-35758-0_23 ER -