Danielewicz, Dariusz. “Quality Types of Pine (Pinus Sylvestris) Kraft Pulps and the Boundary Values of Their Kappa Numbers, Yield, and Reject Content in Digester Pulp”. BioResources, vol. 21, no. 3, July 2026, pp. 8479-88, https://ojs.bioresources.com/index.php/BRJ/article/view/25741.