Möckel D, Nowotny M, Kössl M. Mechanical basis of otoacoustic emissions in tympanal hearing organs.  2014. Available at: http://link.springer.com/10.1007/s00359-014-0914-2.

Moir HM, Jackson JCurt, Windmill JFC. No evidence for DPOAEs in the mechanical motion of the locust tympanum.  2011. Available at: http://jeb.biologists.org/cgi/doi/10.1242/jeb.056465https://syndication.highwire.org/content/doi/10.1242/jeb.056465.