Papa Leo IX
Mansi's, Sacrorum Conciliorum] Nova Amplissima Collectio, [http://www.documentacatholicaomnia.eu/04z/z_1692-1769__Mansi_JD__Sacrorum_Conciliorum_Nova_Amplissima_Collectio_Vol_019__LT.pdf.html Vol. 19 (xix) .pdf - 66 Mb. See Col. 635-656.