documentation – How should I list authors and their roles in doxygen comments?

Suppose I’m the first person write a proper Doxygen comment for a source file. Suppose also that there have been multiple contributors to the file – original author, previous maintainers, current maintainers, people who contributed a function, or just a minor one-liner bug fix.

What’s an appropriate way to list them (using the @author / @authors doxygen tag), along with their roles? (Or – should I not list their roles?)