I wrote my Bachelor's thesis on "Generating Article Placeholders from Wikidata for Wikipedia: Increasing Access to Free and Open Knowledge". The thesis summarizes a lot of the work done on the ArticlePlaceholder extension ( https://www.mediawiki.org/wiki/Extension:ArticlePlaceholder )
I uploaded the thesis to commons under a CC-BY-SA license- you can find it at https://commons.wikimedia.org/wiki/File:Generating_Article_Placeholders_from...
I continue working on the extension and aim to deploy it to the first Wikipedias, that are interested, in the next months.
I am happy to answer questions related to the extension!
Lucie (Frimelle)