@article {Bert:December 1999:1369-8869:183,
	author = "Bert C.W.",
	title = "Range and endurance of turboprop, turbofan, or piston-propeller aircraft having wings with or without camber",
	journal = "Aircraft Design",
	volume = "2",
	year = "December 1999",
	abstract = "",
	pages = "183-190(8)",
	url = "http://www.ingentaconnect.com/content/els/13698869/1999/00000002/00000004/art00013"
	doi = "doi:10.1016/S1369-8869(99)00013-0"
}