@article{4796edd49bd84cc589faf64f32d08bbd,
title = "The chandra deep protocluster survey: Evidence for an enhancement of AGN activity in the SSA22 protocluster at z = 3.09",
keywords = "X-rays: general, cosmology: observations, early universe, galaxies: active, galaxies: clusters: general, surveys",
author = "Lehmer, {B. D.} and Alexander, {D. M.} and Geach, {J. E.} and Ian Smail and A. Basu-Zych and Bauer, {F. E.} and Chapman, {S. C.} and Y. Matsuda and Scharf, {C. A.} and M. Volonteri and T. Yamada",
year = "2009",
month = jan,
day = "20",
doi = "10.1088/0004-637X/691/1/687",
language = "English",
volume = "691",
pages = "687--695",
journal = "Astrophysical Journal",
issn = "0004-637X",
publisher = "IOP Publishing Ltd.",
number = "1",
}