@Book{BVPB20130058603, title = "Cam\'{e}rier secret, chevalier de cape et d\textquotesingle \'{e}p\'{e}e = Cameriere secreto, cavaliere di spada e cappa", author = "Helyot, Pierre, 1660-1716", URL = "https://bvpb.mcu.es/es/consulta/registro.do?id=487238", year = "1862", }