Heil, M. Department of Bioorganic Chemistry, MPI for Chemical Ecology, Max Planck Society;
Heil, M., Hilpert, A., Kruger, R., & Linsenmair, K. E. (2004). Competition among visitors to extrafloral nectaries as a source of ecological costs of an indirect defence. Journal of Tropical Ecology, 20(2), 201-208. doi:10.1017/S026646740300110X.