Boyd, John W., Migotsky, Eugene., Wetzel, Benton E.
naca-rm-a55g19
1955
A theoretical and experimental study has been made to determine the effectiveness of conical camber in reducing the drag due to lift of low-aspect-ratio triangular and sweptback wings.
An Adobe Acrobat (PDF) file of the entire report:
http://naca.central.cranfield.ac.uk/reports/1955/naca-rm-a55g19.pdf