@Article{schreiber2004_polar-motion,
	author =	{Schreiber, K.U. and Velikoseltsev, A. and Rothacher, M. and Klugel, T. and Stedman, G.E. and Wiltshire, D.L.},
	title = 	"{Direct measurement of diurnal polar motion by ring laser gyroscopes}",
	journal =	{Journal of Geophysical Research},
	volume =	{109},
	number =	{B6},
	month =	{},
	year =	{2004},
}