@article{jas2011ss,
  title = {Shape Space Analysis of Structures in Bat Biosonar},
  author = {Rolf Mueller and Lyvin Cai and Cindy Grimm and Washington Mio},
  journal = {The Journal of the Acoustical Society of America},
  volume = {129},
  number = {4},
  pages = {2507},
  publisher = {ASME},
  month = {April},
  year = {2011}
}