@article {He:1 February 2002:0002-2667:9,
	author = "He J-H.",
	title = "A variational model for a symmetric transonic aerofoil",
	journal = "Aircraft Engineering and Aerospace Technology: An International Journal",
	volume = "74",
	year = "1 February 2002",
	abstract = "By the semi-inverse method proposed by He, a variational principle is established for steady flow over a thin, symmetric, non-lifting aerofoil. The nonlinear, small-disturbance, velocity-potential equation is obtained by minimizing the obtained functional, and all boundary conditions are converted into natural boundary conditions, resulting in much convenience when incorporating the finite element method.",
	pages = "9-11(3)",
	url = "http://www.ingentaconnect.com/content/mcb/127/2002/00000074/00000001/art00002"
	doi = "doi:10.1108/00022660210414976"
}