Geospatial images in the acquisition of spatial knowledge for wayfinding. - Pyry Kettunen; Katja Irvankoski; Christina M. Krause; Tapani Sarjakoski; L. Tiina Sarjakoski (J. Spatial Inf. Sci., 2012)

Landmarks in nature to support wayfinding: the effects of seasons and experimental methods. - Pyry Kettunen; Katja Irvankoski; Christina M. Krause; L. Tiina Sarjakoski (Cogn. Process., 2013)

Perception and Recall of Landmarks for Personal Navigation in Nature at Night Versus Day. - Pyry Kettunen; Katja Putto; Valérie Gyselinck; Christina M. Krause; L. Tiina Sarjakoski (CARTOCON, 2014)