Ossa, G., Kramer-Schadt, S., Peel, A. J., & Scharf, A. K. (2012). The movement ecology of the straw-colored fruit bat, Eidolon helvum, in sub-saharan Africa assessed by stable isotope ratios. PLoS One, 7(9): e45729. doi:10.1371/journal.pone.0045729.