HUBBLE DISCOVERS NEW CLASS OF GRAVITATIONAL LENS FOR PROBING STRUCTURE OF THE COSMOS
(Kavan Ratnatunga. 18-10-1995)
HUBBLE VIEWS DISTANT GALAXIES THROUGH A COSMIC LENS
(W.Couch. 5-4-1995)
Una misteriosa lent gravitacional
(W.N. Colley and E. Turner. 24-4-1996)