A direct empirical proof of the existence of dark matter by Douglas Clowe and others
= A direct empirical proof of the existence of dark matter by Douglas Clowe and others
{c}
{tag=Work by Douglas Clowe}
{title2=2006}
https://arxiv.org/abs/astro-ph/0608407
Primary weak-lensing and merger-component analysis; Astrophysical Journal648,L109–L113.