@article {Letchford:February 2001:0167-6105:135,
	author = "Letchford C.W.",
	title = "Wind loads on rectangular signboards and hoardings",
	journal = "Journal of Wind Engineering and Industrial Aerodynamics",
	volume = "89",
	year = "February 2001",
	abstract = "",
	pages = "135-151(17)",
	url = "http://www.ingentaconnect.com/content/els/01676105/2001/00000089/00000002/art00068"
	doi = "doi:10.1016/S0167-6105(00)00068-4"
}