Ars Mag
A French language Ars Magica magazine edited by Eric Kouris. It reached 23 issues before publication was suspended in 2001. As such in issue count it is longest running Ars Magica fanzine. Eric Kouris was also editor of Hermes Portal, and English language fanzine.
Ars Mag page: https://styren.pagesperso-orange.fr/ars/zine1.htm