@article{oai:repository.dl.itc.u-tokyo.ac.jp:00000820,
 author = {Sasaki, Takehiro and Okayasu, Tomoo and Undarmaa, Jamsran and Takeuchi, Kazuhiko},
 issue = {1},
 journal = {The Journal of ecology},
 month = {},
 pages = {145--154},
 title = {Threshold changes in vegetation along a grazing gradient in Mongolian rangelands},
 volume = {96},
 year = {2008}
}