This metric is so dumb! It only helps maintain existing closed journals closed! Why not just do a PageRank on the articles themselve instead? Like the h-index does for authors? That would make so much more sense!
Ended up under Springer in 2015 after a massive merger.
Publications by the Prussian Academy of Sciences.
This was the God OG physics journal of the early 20th century, before the Nazis fucked German science back to the Middle Ages!
Notable papers:
Belongs to Springer, so you can still find papers under paywalls on their website.