1. https://www.researchgate.net/publication/348788279_Restoration_of_European_beaver_Castor_fiber_in_Poland_-a_proper_or_wrong_lesson_of_active_protection_for_other_European_countries
2. https://www.academia.edu/78034033/Alteration_of_North_American_Streams_by_Beaver
3. https://www.sciencedirect.com/science/article/abs/pii/S0048969724053166
4. https://www.cambridge.org/core/journals/canadian-journal-of-economics-and-political-science-revue-canadienne-de-economiques-et-science-politique/article/abs/hats-and-the-fur-trade/416DA3123B60958526CD6FB198AB5F16
5. https://www.nationalgeographic.com/animals/article/beaver-butt-goo-vanilla-flavoring
6. https://westernbeavers.org/wp-content/uploads/2020/12/McKinstry-2001-Importance-of-beaver-to-waterfowl-habitat.pdf
7. https://www.sciencedirect.com/science/article/abs/pii/S0006320797000669
8. https://wires.onlinelibrary.wiley.com/doi/10.1002/wat2.1494
9. https://www.discoverwildlife.com/animal-facts/mammals/beaver-drop-idaho-1948
10. https://onlinelibrary.wiley.com/doi/full/10.1111/mam.12216
11. https://www.beaversww.org/2011/05/08/worlds-longest-beaver-dam/