Author not established. General references for further reading [editorial display title]. Date not established. EHREA archive: /library/documents/doc-b80e0f86d5778dfd12c52d26/
[1] refere.php. Original source: http://www.ehrea.org/refere.php. Preserved original: /library/originals/8945a7635d578cdbf8e3c84526e3b9b70173d6afa8b019c12b16b1a648b2f12e.html. SHA-256: 8945a7635d578cdbf8e3c84526e3b9b70173d6afa8b019c12b16b1a648b2f12e