1. RaynerJ.M.V.,andGoedon,R.,1991,"VisualizationandModellingoftheWakesofFlyingBirds,"Visualizationand modellingofthewakesofflyingbirds,"In:BionaReport.13,Motion Systems ed.R.Blickham,A. Wisser & W.Nachtigall.Jena: GustavFischerVerlagpp.165-73.BWEB:R42171.
2. Minimum induced power requirements for flapping flight