The space density of luminous dusty star-forming galaxies at $z>4$ : SCUBA-2 and LABOCA imaging of ultrared galaxies from $Herschel$-ATLAS
This is an author-created, un-copyedited version of an article accepted for publication in The Astrophysical Journal. IOP Publishing Ltd. is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The Version of Record is available online at 10.3847/0004-637X/832/1/78 © 2016. The American Astronomical Society.