What is Article 19 of UN Charter?

Article 19 of UN Charter provides payment arrears as grounds for losing voting rights in the UNGA. According to the article, member nations that have arrears in payment of financial contributions that is equal to or more than the contributions due for the preceding 2 years would lose their right to vote in the UN General Assembly. Recently, Iran and 6 other nations: Niger, Libya, the Central African Republic, Congo Brazzaville, South Sudan and Zimbabwe lost their voting rights.