High resolution imaging and spectroscopy of the gravitational lens SDSSJ1206+4332: a natural coronagraph at $z=1.789$ and a standard ruler at $z=0.745$
Journal article published in 2015 by
Adriano Agnello,
Alessandro Sonnenfeld,
Sherry H. Suyu,
Tommaso Treu,
Christopher D. Fassnacht,
Maruša Bradač,
Charlotte Mason 
,
Matthew W. Auger
,
Matthew W. Auger
