@article{1364612,
      recid = {1364612},
      author = {Adem, Alejandro, and Morava, Jack, and Ruan, Yongbin,},
      title = {Orbifolds in mathematics and physics : proceedings of a  conference on mathematical aspects of orbifold string  theory, May 4-8, 2001, University of Wisconsin, Madison,  Wisconsin /},
      pages = {1 online resource (370 pages) :},
      url = {http://library.usi.edu/record/1364612},
}