Frankel, S. J., J. Alexander, D. Benner, J. Hillman, and A. Shor. “Phytophthora Pathogens Threaten Rare Habitats and Conservation Plantings”. Sibbaldia: The International Journal of Botanic Garden Horticulture, no. 18, Feb. 2020, pp. 53-65, doi:10.23823/Sibbaldia/2020.288.