@Article{cantring,
	author =	{Stedman, G.E. and Bilger, H.R. and Li, Z.Y. and Poulton, M.P. and Rowe, C.H. and Vetharaniam, I. and Wells, P.V.},
	title = 	"{Canterbury ring laser and tests for nonreciprocal phenomena}",
	journal =	{Australian Journal of Physics},
	volume =	{46},
	number =	{1},
	month =	{},
	year =	{1993},
}