Martin Gascoigne-Pees, Colin Wiskin, Milan Đurić and 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 Nachr. entomol. Ver. Apollo, N.F. 35 (1/2): 77–96 (2014).pdf