«Algebraic Difference Equations for Stand Height, Diameter, and Volume Depending on Stand Age and Site Factors for Estonian State Forests». Mathematical and Computational Forestry & Natural-Resource Sciences (MCFNS) 1, no. 2 (august 28, 2009): 67–77 (11). åpnet november 1, 2026. https://mcfns.com/index.php/Journal/article/view/1.9.