foundInKp. Epistola Constantinopolitanæ Ecclesiæ ad Bohemos, Scripta Qvidem Ante annos 112, biennio nimirum ante captam a Turcis Constantinopolim: Sed non ita diu in lucem prolata Pragæ ex bibliotheca Collegij Caroli Quarti / studio piæ memoriæ Doctoris Caspari a Nydbruck [...]. - Vitebergæ, 1564. — DNB online. — de.wikipedia, 5.06.2012 (Kaspar von Niedbruck)