Herman de Jong, Pjotr Oosterbroek, Jon Gelhaus, Herbert Reusch, Chen Young (2008): Global diversity of craneflies (Insecta, Diptera: Tipulidea or Tipulidae sensu lato) in freshwater. Hydrobiologia 595: 457–467 doi:10.1007/s10750-007-9131-0
N. P. Krivosheina (2011): New data on the larval morphology of limoniid flies of the genus Ula (Diptera, Pediciidae). Entomological Review 91(4): S. 432–443. doi:10.1134/S001387381104004X
