= Lectures on Gravitational Lensing by Ramesh Narayan and Matthias Bartelmann
{c}
{tag=Work by Ramesh Narayan}
{tag=Work by Matthias Bartelmann}
{title2=updated 1997}
By <Ramesh Narayan>, <Matthias Bartelmann>.
Online text: https://arxiv.org/pdf/astro-ph/9606001
arXiv version 1 was submitted on 3 June 1996; version 2 was revised on 2 October 1997. The date printed by the dynamically regenerated PDF is not used as a publication date.
Cited passages: Section 2.1.3, pp. 8-9, equations (13)-(15), including the warning that lens-source angular diameter distance is not the difference of the observer distances.
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