@Article{ 
  CheLiLiu8,
  author = { Chen, Lin and Li, Yi and Liu, Kefeng },
  title = { Localization, Hurwitz numbers and the Witten conjecture },
  journal = { Asian Journal of Mathematics },
  year = { 2008 },
  doi = { 10.4310/AJM.2008.v12.n4.a5 },
  volume = { 12 },
  number = { 4 },
  pages = { 511-518 },
  URL = { http://cvgmt.sns.it/paper/3289/ },
  note = { cvgmt preprint}
}