Chang H., Kirejtshuk A.G., Ren D., C. Chih. 2009.
First fossil click beetles from the Middle Jurassic of Inner Mongolia, China (Coleoptera, Curculionidae, Elateridae).
Annales Zoologici, 59 (1): 7-14.
Full copy of the paper in a file format PDF: chang_kir_elat_2009.pdf