@article {Ehlers:January 2004:0003-4916:232,
	author = "Ehlers J.",
	author = "Geroch R.",
	title = "Equation of motion of small bodies in relativity",
	journal = "Annals of Physics",
	volume = "309",
	year = "January 2004",
	abstract = "",
	pages = "232-236(5)",
	url = "http://www.ingentaconnect.com/content/els/00034916/2004/00000309/00000001/art00225"
	doi = "doi:10.1016/j.aop.2003.08.020	"
}