WorkPartner. - Aarne Halme; Ilkka Leppänen; Jussi Suomela; Sami Ylönen; Ilkka Kettunen (Int. J. Robotics Res., 2003)

Sensing terrain parameters and the characteristics of vehicle-terrain interaction using the multimode locomotion system of a robot. - Ilkka Leppänen; Petri J. Virekoski; Aarne Halme (IROS, 2008)

Cheap talk and cooperation in Stackelberg games. - Raimo P. Hämäläinen; Ilkka Leppänen (Central Eur. J. Oper. Res., 2017)

Partial commitment in an endogenous timing duopoly. - Ilkka Leppänen (Ann. Oper. Res., 2020)

Taking stock of behavioural OR: A review of behavioural studies with an intervention focus. - L. Alberto Franco; Raimo P. Hämäläinen; Etiënne A. J. A. Rouwette; Ilkka Leppänen (Eur. J. Oper. Res., 2021)

Newsvendor stockouts and option discriminability. - Ilkka Leppänen (Eur. J. Oper. Res., 2025)