“One Year’s Experience with a Recreation-Grade GPS Receiver”. Mathematical and Computational Forestry & Natural-Resource Sciences (MCFNS) 2, no. 2 (Ağustos 9, 2010): Pages: 153–160 ( (8). Erişim Ekim 30, 2026. https://tmp.mcfns.com/index.php/Journal/article/view/MCFNS.2-153.