Dr. Petri Varvia, University of Eastern Finland (From December 2021 to Mai 2022)
PhD student Melichová Zlatica, Czech University of Life Sciences Prague,  Czech Republic (November 2019)
Researcher Ivan Sačkov, National Forest Centre – Forest Research Institute Zvolen (March to June 2019)
PhD student Darío Domingo Ruiz, University of Zaragoza, Spain (August to November 2018)
Research Fellow Doc Cicimol Alexander, Bournemouth University,  Department of Life and Environmental Sciences (May to June 2017)
PhD student Francesca Giannetti, Department of Agricultural, Food and Forestry Systems, University of Florence (January to May 2017)
PhD student Zdeněk Patočka, Mendel University in Brno (From Mai to June 2016)
Professor Matti Maltamo, University of Eastern Finland (visiting professor spring 2009, June 2011 and 2015)
PhD Student Patricia Arrogante Funes, King Juan Carlos University (From March 2015 to June 2015)
Dr. Jari Vauhkonen, University of Eastern Finland (September 2013)
PhD Student Jan Trochta Mendel, University in Brno (September 2013)
Dr. Lauri Korhonen, University of Eastern Finland (From January to June 2013)
Dr. Michele Dalponte, Research and Innovation Centre – Fondazione Edmund Mach (From June 2011 to April 2013)
Dr. Ross Nelson, NASA (Multiple 1-4 weeks periods 2006-2010)
PhD student Eveliina Kotamaa,  University of Eastern Finland (Spring 2009)