title: Inter-unit contests within a provisioned troop of Sichuan snub-nosed monkeys (Rhinopithecus roxellana) in the Qinling Mountains, China.
authors.affiliation: School of Life Science, Peking University, Beijing, People's Republic of China. white_langur@yahoo.com.cn
authors.forename: Qing
authors.initials: Q
authors.lastname: Zhao
authors.forename: Chia L
authors.initials: CL
authors.lastname: Tan