For coins of the city of Augsburg there have been two known reference works:
1. Albert Forster & Richard Schmid: "Die Münzen der freien Reichsstaadt Augsburg"
2. Albert Forster: "Die Erzeugnisse der Stempelschneidekunst in Augsburg und Ph. H. Müller's nach meiner Sammlung beschrieben und die Augsburger Stadtmünzen". (https://www.worldcat.org/title/products-of-stamp-cutting-art-in-augsburg-and-ph-h-mullers-after-my-collection-described-and-the-augsburger-city-coins/oclc/600816393&referer =brief_results)
Here on Numista only No. 1 is recorded (https://en.numista.com/catalogue/catalogue.php?id=198).
However, many reference numbers entered in the Numista catalogue for Augsburg city coins refer to No. 2. I therefore suggest to include No. 2 here as a reference work also, so that there is less confusion.