Список источников
Airborne laser scanning based forest inventory – experiment in Perm region, Russia and comparison to results in Finland// , Sergey Pyankov, VirpiJunttila, Alexander Kedrov,Andrey Tarasov, Anton Kuzmin, Jussi Peuhkurinen, Maria Villikka, Ville-Matti Vartio, Sanna Sirparanta. 2017. Bazel, Switzerland. (Второйквартиль)