Hygroscopic behavior of thermo-hygro-mechanical (THM) densified oil palm sawn timber
N. Kölli, K. Frühwald-König, M. Hackel, Wood Material Science &; Engineering (2024) 1–12.

Dewatering behavior of wet oil palm sawn timber during flat compression
N. Kölli, Wood Material Science &; Engineering (2024) 1–15.

Mechanical Dewatering of Wet Oil Palm Lumber Prior to Press-Drying
K. Frühwald-König, N. Kölli, A. Frühwald, in: M. Jawaid, M. Midani, R. Khiari (Eds.),  Proceedings of 2nd World Conference on Byproducts of Palms and Their Applications , Springer Nature Singapore, Singapore, 2022.

Densification and Press-Drying of Wet Oil Palm Lumber
N. Kölli, in: T.M. Young , A. Petutschnigg (Eds.), 6th International Conference on  Process Technologies for the Forest  and Biobased Products Industries  PTF BPI 2021 , 2021.