Design of a robotic automation system for transportation of goods in hospitals. - Ali Gürcan Özkil; Steen Dawids; Zhun Fan; Torben Sørensen (CIRA, 2007)

Empirical evaluation of a practical indoor mobile robot navigation method using hybrid maps. - Ali Gürcan Özkil; Zhun Fan; Jizhong Xiao; Jens Klæstrup Kristensen; Steen Dawids; Kim Hardam Christensen; Henrik Aanæs (IROS, 2010)

Mapping of multi-floor buildings: A barometric approach. - Ali Gürcan Özkil; Zhun Fan; Jizhong Xiao; Steen Dawids; Jens Klæstrup Kristensen; Kim Hardam Christensen (IROS, 2011)