C. Wilmers, R. Crabtree, D. Smith et al., «Resource Dispersion and Consumer Dominance: Scavenging at Wolf– and Hunter-Killed Carcasses in Greater Yellowstone, USA,» Ecology Letters 6 (2003): 996–1003, doi: 10.1046/j.l461–0248.2003.00522.x; Wilmers et al., «Trophic Facilitation.»