„Relative Efficiency of Point Sampling Change Estimators“, Math. Comput. For. Nat. Res. Sci., sv. 3, izd. 2, str. Pages: 64–72 (9), kol. 2011, Pristupljeno: lis. 31, 2026. Dostupno na: https://tmp.mcfns.com/index.php/Journal/article/view/MCFNS.3-64