OLS: opportunistic localization system for smart phones devices. - Martin Klepal; Maarten Weyn; Warsun Najib; Inge Bylemans; Sigit Basuki Wibowo; Widyawan; Bimo Hantono (MobiHeld, 2009)

Rao-Blackwellized particle filter for pattern matching indoor localisation. - Sigit Basuki Wibowo; Martin Klepal (UPINLBS, 2010)

MapUme: Scalable middleware for location aware computing applications. - Warsun Najib; Martin Klepal; Sigit Basuki Wibowo (IPIN, 2011)