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1986ApJ...310..568B - Astrophys. J., 310, 568-582 (1986/November-0)
Fermat's principle, caustics, and the classification of gravitational lens images.
BLANDFORD R. and NARAYAN R.
Abstract (from CDS):
Abstract Copyright: ∼
Journal keyword(s): Galaxies: Clustering - Gravitation - Quasars - Relativity
Simbad objects: 1
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