Authors: Ripple, WJ Larsen, EJ Renkin, RA Smith, DW

Citation: Wj. Ripple et al., Trophic cascades among wolves, elk and aspen on Yellowstone National Park's northern range, BIOL CONSER, 102(3), 2001, pp. 227-234

Authors: Larsen, EJ Ripple, WJ

Citation: Ej. Larsen et Wj. Ripple, Aspen overstory recruitment in Northern Yellowstone National Park during the last 200 years, USDA ROCKY, (18), 2001, pp. 345-346

Authors: Ripple, WJ Larsen, EJ

Citation: Wj. Ripple et Ej. Larsen, Historic aspen recruitment, elk, and wolves in northern Yellowstone National Park, USA, BIOL CONSER, 95(3), 2000, pp. 361-370