@incollection{TUW-268588, author = {Retscher, G{\"u}nther and Kealy, Allison}, title = {Navigation Based on Sensors in Smartphones}, booktitle = {Positioning and Navigation in Complex Environments}, year = {2018}, pages = {368--396}, organization = {Kegen Yu}, publisher = {IGI Global}, address = {Hershey PA, USA}, isbn = {9781522535287}, doi = {10.4018/978-1-5225-3528-7.ch009}, note = {invited} }