@patent{FRI10d, title = {Method and apparatus for the analysis of a ballistocardiogram signal}, year = {2010}, number = {WO2011013048 A1}, owner = {dfriedrich}, timestamp = {2013.08.20}, yearfiled = {2009}, author = {Christoph Brueser and Kurt Stadlthanner and David Friedrich and Andreas Brauers}} howpublished = {},