Author not established. National Conference. Date not established. EHREA archive: /library/documents/doc-69ed9bb5b0bbb13348c9095f/
[1] National Conference. Original source: http://www.ehrea.org/tru.php. Preserved original: /library/originals/f4b5014a02926833a94892f3b035a220e94107bb3d0c7f93dd5ba24b34a87e4c.html. SHA-256: f4b5014a02926833a94892f3b035a220e94107bb3d0c7f93dd5ba24b34a87e4c