Y.  Jang and Gerhardt, H., ?Temperature Effects on the Temporal Properties of Calling Songs in the Crickets Gryllus fultoni and G. vernalis: Implications for Reproductive Isolation in Sympatric Populations?, Journal of Insect Behavior, vol. 20, pp. 33?52, 2007.

Y.  Jang, Bockhorst, A., and Gerhardt, H. Carl, ?Reproductive Isolation in the Wood Cricket Gryllus vernalis (Orthoptera: Gryllidae)?, Ethology, vol. 113, pp. 87?96, 2007.