Author not established. Germano Nati. Date not established. EHREA archive: /library/documents/doc-69ff9beddc755590ce575539/
[1] Germano Nati. Original source: http://www.ehrea.org/germano_nati.htm. Preserved original: /library/originals/9f7521c5ef127b20d92a0f937af30a839e998ccec81479b27a96a04a282d05d2.html. SHA-256: 9f7521c5ef127b20d92a0f937af30a839e998ccec81479b27a96a04a282d05d2