If you can recommend code or see a possibility to improve the author handling in general, I would be happy to hear and include!

We should expect "anything" in their RIS. Some more examples I found:

AU  - By Rani Karnik and Chris Cahn

AU  - Werner Grsse
AU  - BBennie Linde
AU  - René Schalk
AU  - 
AU  - WernerGresse
AU  - 
AU  - PhD student at the Potchefstroom campus of the North-West University (South Africa)
AU  - WorkWell Research Unit. North-West University
AU  - Private Bag X6001
AU  - Potchefstroom
AU  - 2520
....