Zhang, C.-T., Shima, H., Wang, Q. and Tschorsnig, H.-P. (2015) “A review of Billaea Robineau-Desvoidy of the eastern Palearctic and Oriental regions (Diptera: Tachinidae)”, Zootaxa. Auckland, New Zealand, 3949(1), pp. 1–40. doi: 10.11646/zootaxa.3949.1.1.