* The name is misspelled: Perhaps the author's name is slightly different. Could you double-check the spelling?
* The author is less known: It's possible that Albert Petersen is a lesser-known author, potentially writing in a specific niche or genre.
* The author uses a pen name: Some authors use pseudonyms, making it hard to find their real name.
To help me find information, please provide:
* Any other details about the author: Do you know their genre, time period, or any specific works?
* A source where you encountered the name: Was it a book, website, or something else?
With more information, I can help you find out what Albert Petersen has written.