Theischinger 2012. Classification of the Austroaeschna group of genera including the introduction of four new subgenera (Glaciaeschna subgen. nov., Montiaeschna subgen. nov., Occidaeschna subgen. nov and Petersaeschna subgen. nov.) (Odonata: Telephlebiidae). Libellula Supplement, 12 2012: 29-48