Silje Marie Svartefoss and Antje Klitkou just published their article on interlocking of boards:

Svartefoss, S. M., & Klitkou, A. (2024). The role of board interlocks in increasing the use of wood in Norwegian construction. Corporate Board: Role, Duties and Composition, 20(1), 8–22.
https://doi.org/10.22495/cbv20i1art1