@phdthesis{TUW-141407, author = {Graf, Sabine}, title = {Adaptivity in Learning Management Systems focussing on Learning Styles}, school = {Institut f{\"u}r Softwaretechnik und Interaktive Systeme}, year = {2007}, url = {http://publik.tuwien.ac.at/files/PubDat_141407.pdf} }