@techreport{Wan12TR12,
   author = {Wan, S. and Ye, T. and Li, M. and Zhang, H. and Li, X.},
   institution = {Louisiana State University - School of Compute Science and Electrical Engineering},
   title = {Hierarchically Optimizing Spherical Mapping},
   url = {Http://www.ece.lsu.edu/xinli/Research/SphMapTR2012.pdf},
   year = {2012}
}