Issues in relation to which referendums are mandatory at the national level

Constitution

http://www.kazakhstan.orexca.com/kazakhstan_constitution.shtml#2

Article 91. Amendments and additions to the Constitution of the Republic ofKazakhstan may be introduced only by an all-nation referendum held by thedecision of the President of the Republic made on his own initiative, at therecommendation of Parliament or the Government. The draft ofamendments and additions to the Constitution shall not be submitted to anall-nation referendum if the President decides to pass it to the considerationof Parliament. [...]

There areno provisions for mandatory referendums in the legislation of the country.