Clavijo McCormick, A. L., Boeckler, A., Köllner, T., Gershenzon, J., & Unsicker, S. (2014). The timing of herbivore-induced volatile emission in black poplar (Populus nigra) and the influence of herbivore age and identity affect the value of individual volatiles as cues for herbivore enemies. BMC Plant Biology, 14:. doi:10.1186/s12870-014-0304-5.