Höbel G, Schul J. Listening for males and bats: spectral processing in the hearing organ of Neoconocephalus bivocatus (Orthoptera: Tettigoniidae).  2007. Available at: http://link.springer.com/10.1007/s00359-007-0245-7.

Stratman KD, Höbel G. Opportunity for female choice in the wild is frequently curtailed by low male trait variation in Hyla versicolor.  2019. Available at: http://link.springer.com/10.1007/s00265-019-2666-z.