@book{8553,
	author = {International Course on Observational and theoretical Astronomical Society of the Pacificects of Relativistic Astrophysics and Cosmology and Goicoechea, L. J., ed.},
	title = {Observational and Theoretical Aspects of Relativistic Astrophysics and cosmology},
	publisher = {World Scientific},
	year = {1985},
	address = {Singapore,}
}