Only the second theropod described from Antarctica Imperobator antarcticus is a Dromaeosaurid and was found in 2003 and reported in 2007 in this paper 10.1.1.546.3890.pdf
Blog
http://theropoddatabase.blogspot.com/2019/04/imperobator-second-named-antarctic.html
Paywalled Paper describing I. antarcticus (not really important since we have other publications and blogs)
https://www.sciencedirect.com/science/article/pii/S0195667118300120