Foreign Nationals and Integration Act, art. 111 para. 2 let. e (repealed, SR 142.20, transl., status 2023-09)
EXP: in a larger sense generic term that comprises "stage name", "screen name", "pen name" etc.
after Wikipedia, "Stage name" ([Internet, 2025-10-13](https://en.wikipedia.org/wiki/Stage_name)) and Wikipedia, "Pseudonym" ([Internet, 2025-10-13](https://en.wikipedia.org/wiki/Pseudonym))