Allard HA. REMARKABLE MUSICAL TECHNIQUE OF THE LARGER ANGULAR-WINGED KATYDID. Science. 1928;67(1746):613 - 614. Available at: http://www.sciencemag.org/cgi/doi/10.1126/science.67.1746.613https://syndication.highwire.org/content/doi/10.1126/science.67.1746.613.