Reference

Martin Gascoigne-Pees, Colin Wiskin, Milan Duric, Duncan Trew (2014): The lifecycle of Nymphalis vaualbum ([Denis & Schiffermüller], 1775) in Serbia including new records and a review of its present status in Europe (Lepidoptera: Nymphalidae) – Nachrichten des Entomologischen Vereins Apollo – 35: 77 - 96.