Çankırı Karatekin University, Faculty of Forestry, Department of Forest Engineering, 18200, Çankırı, Turkey
Middle East Technical University, Institute of Applied Mathematics, 06800, Ankara, Turkey
Z. Akyürek
Middle East Technical University, Faculty of Engineering, Department of Civil Engineering, 06800, Ankara, Turkey
Middle East Technical University, Graduate School of Natural and Applied Sciences, Department of Geodetic and Geographic Information Technologies, 06800, Ankara, Turkey
G.-W. Weber
Middle East Technical University, Institute of Applied Mathematics, 06800, Ankara, Turkey
Middle East Technical University, Graduate School of Natural and Applied Sciences, Department of Geodetic and Geographic Information Technologies, 06800, Ankara, Turkey