Enciclopedia Italiana link

https://www.treccani.it/enciclopedia/ismael-boulliau/?search=Boulliau%2C%20Ismael%2F

Wikipedia link

https://it.wikipedia.org/wiki/Ismael_Bullialdus

Viaf Link

https://viaf.org/viaf/29630623/#Boulliau,_Isma%C3%ABl,_1605-1694