Y. Winter, C. Voigt, and O. Von Helversen.
  <b>Gas exchange during hovering flight in a nectar-feeding bat
  Glossophaga soricina</b>.
  <i>Journal of Experimental Biology</i>, 201(2):237-244, 1998.
  <A HREF="http://vis.cs.brown.edu/results/bibtex/Winter-1998-GEH.bib">(bibtex:
  Winter-1998-GEH)</A>.<br />