Frankel, S. J., Alexander, J., Benner, D., Hillman, J., & Shor, A. (2020). Phytophthora pathogens threaten rare habitats and conservation plantings. Sibbaldia: The International Journal of Botanic Garden Horticulture, (18), 53–65. https://doi.org/10.24823/Sibbaldia.2020.288