Karwel, A., K., 2012, Estimation of accuracy of SRTM-X terrain model on Polish area , Archiwum Fotogrametrii, Kartografii i Teledetekcji 1, 139-145 @Article{2012ArFKT..23K..139, author = {Karwel, A., K.}, title = {{Estimation of accuracy of SRTM-X terrain model on Polish area }}, journal = {Archives of Photogrammetry, Cartography and Remote Sensing}, year = {2012}, volume = {1}, number = {1}, pages = {139--145}, }