@TECHREPORT{wagnertechrep2008,
author = {Wagner, Daniel and Langlotz, Tobias and Schmalstieg, Dieter },
title = {Technical Report on Robust and Unobtrusive Marker Tracking on Mobile Phones},
institution = {Graz University of Technology},
year = {2008},
pdf = {http://www.icg.tugraz.at/pub/pdf/Wagner08_AMT_Report.pdf},
}