@article {Hong:November 1997:0020-7683:4281,
	author = "Hong H.-K.",
	author = "Liu C.-S.",
	title = "Prandtl-Reuss elastoplasticity: on-off switch and superposition formulae",
	journal = "International Journal of Solids and Structures",
	volume = "34",
	year = "November 1997",
	abstract = "",
	pages = "4281-4304(24)",
	url = "http://www.ingentaconnect.com/content/els/00207683/1997/00000034/00000033/art00026"
	doi = "doi:10.1016/S0020-7683(97)00026-7"
}