Signature Graphs for Effective Localization. - Sven Rönnbäck; Tomas Berglund; Håkan Fredriksson; Kalevi Hyyppä (IROS, 2006)

Circle Sector Expansions for On-Line Exploration. - Sven Rönnbäck; Tomas Berglund; Håkan Fredriksson; Kalevi Hyyppä (ROBIO, 2006)

Track Loader Kinematics. - Håkan Fredriksson; Kalevi Hyyppä; Ulf Andersson (TA, 2010)

Obstacle avoidance using haptics and a laser rangefinder. - Daniel Innala Ahlmark; Håkan Fredriksson; Kalevi Hyyppä (ARSO, 2013)