Quoting from the declaration of independence: "With the participation of delegates from all levels of councils in a joint session of peoples deputies of the Nagomo Karabakh (NK) regional and Shahumian district councils, by the expression of the popular will supported by a documented referendum, and by the decision taken by the authorities of the NK autonomous region and the Shahimian district between 1988-91 concerning its freedom, independence, equal rights, and neighborly relations". The burden is now on you to show that the referendum did not exist in Shahumian.