Robles, Marcos, and F. S. Chapin. "Comparison of the influence of two exotic communities on ecosystem processes in the Berkeley Hills". Madroño, vol. 42, no. 3, California Botanical Society, 1995, pp. 349–357, JSTOR41425082Archived 2021-11-13 at the Wayback Machine.
Robles, Marcos, and F. S. Chapin. "Comparison of the influence of two exotic communities on ecosystem processes in the Berkeley Hills". Madroño, vol. 42, no. 3, California Botanical Society, 1995, pp. 349–357, JSTOR41425082Archived 2021-11-13 at the Wayback Machine.