ARTICLE 47. In the event of a disagreement between the Soviet of the Union and the Soviet of Nationalities, the question is referred for settlement to a conciliation commission formed on a parity basis. If the conciliation commission fails to arrive at an agreement, or if its decision fails to satisfy one of the Chambers, the question is considered for a second time by the Chambers. Failing agreement between the two Chambers, the Presidium of the Supreme Soviet of the U.S.S.R. dissolves the Supreme Soviet of the U.S.S.R. and orders new elections.
This is basically double dissolution.