J. P. McKean, I. W. A. Browne, N. Jackson, C. D. Fassnacht & Phillip Helbig
"The Cosmic Lens All-Sky Survey parent population - I. Sample selection and number counts"
MNRAS, 377, 1, 430–440 (1 May 2007)
free, full, official version | doi:10.1111/j.1365-2966.2007.11618.x | ADS: 2007MNRAS.377..430M (duplicate: 2007yCat..83770430M) | Google Scholar