1. Decreased needle longevity of fertilized Douglas-fir and grand fir in the northern Rockies;Balster;Tree Physiology.,2000
2. SAGA Geoprocessing and terrain analysis;Brenning;R. Package Version,2018
3. Brooks, R., Omdal, D. 2021. 2021 SNC ground sampling in Washington. P. 12-14 in Swiss Needle Cast Cooperative annual report, Ritóková. G. (ed.). College of Forestry, Oregon State Univ., Corvallis, OR.
4. Western Washington Swiss needle cast aerial and ground survey, 2021–2022;Brooks,2022
5. Consistent height-growth and growth-rate estimates for remeasured plots;Bruce;For. Sci.,1981