Author not established. Estifanos Syum. Date not established. EHREA archive: /library/documents/doc-6bac06f5a7ca6cf2694e2d2e/
[1] Estifanos Syum. Original source: http://www.ehrea.org/estifanoss.pdf. Preserved original: /library/originals/558d888fea0037b3a94cc7c85b5d9ae8144dfeb813e8c15d88e793626edf9ffc.pdf. SHA-256: 558d888fea0037b3a94cc7c85b5d9ae8144dfeb813e8c15d88e793626edf9ffc