Franz Mertens
[ar] فرانز ميرتنز
[arz] فرانز ميرتنز
[ca] Franz Mertens
[de] Franz Mertens (Mathematiker)
[es] Franz Mertens
[fr] Franz Mertens
[ht] Franz Mertens
[it] Franz Mertens
[ko] 프란츠 메르텐스
[nl] Franz Mertens (wiskundige)