Are referendum results binding?

Korea, Republic of
CONSTITUTION OF THE REPUBLIC OF KOREA
(Adopted1948; last amended 1987)
http://www.ccourt.go.kr/home/att_file/download/Constitution_of_the_Republic_of_Korea.pdf
(Originaltext: http://www.law.go.kr/lsInfoP.do?lsiSeq=61603)
Chapter X. Amendments to the Constitution
Article 130
(2) The proposed amendments tothe Constitution shall be submitted to a national referendum not later thanthirty days after passage by the National Assembly, and shall be determined by more than one half of allvotes cast by more than one half of voters eligible to vote in electionsfor members of the National Assembly.
(3) When the proposed amendments tothe Constitution receive the concurrence prescribed in paragraph (2), theamendments to the Constitution shall be finalized, and the Presidentshall promulgate it without delay.
REFERENDUM LAW
(Adopted1962; last amended 2009)
http://www.law.go.kr/lsInfoP.do?lsiSeq=91737
Chapter IX. Results
Article 91 (Announcement of Final Result)
대통령이 제89조 또는 제90조의 규정에 의하여 국민투표의 결과를 통보받은 때에는 즉시 이를 공포하여야한다.
TheConstitution and the Referendum Lawdo not specify whether the outcome of an optional referendum initiated by thepresident is binding.