Brandes, Georg: Samlede skrifter 1-13 (Collected writings 1-13) (Gyldendal, 1919) https://archive.org/search.php?query=title%3A%28samlede%29%20AND%20creator%3A%28georg%20brandes%29
Brandes’ translation of John Stuart Mills’ On the Subjugation of Women: http://runeberg.org/kvindunder/
There are some translated texts here: https://archive.org/search.php?query=georg%20brandes
Knudsen, Jørgen: Georg Brandes – den mangfoldige (Gyldendal, 2005)
http://danmarkshistorien.dk/leksikon-og-kilder/vis/materiale/georg-brandes-1842-1927/
https://www.britannica.com/biography/Georg-Brandes