Quorum requirements for a referendum to be valid

Ethiopia
Answer
Not specified by legislation
Source
TheConstitution of the Federal Democratic Republic of Ethiopia
(Adoptedin August 1995)
http://www.apapeth.org/Docs/constitution%20-english.pdf
The Amended Electoral Law ofEthiopia, Proclamation No. 532/2007
(Enactedin 2007)
http://www.electionethiopia.org/en/images/stories/directives/Proclamation/532.pdf