Microlensing variability in time-delay quasars D. Paraficz, J. Hjorth, I. Burud, P. Jakobsson and Á. Elíasdóttir A&A, 455 1 (2006) L1-L4 Published online: 31 July 2006 DOI: 10.1051/0004-6361:20065502