Austria - 1992 Constitution

Title Article 26
Chapter 2 - Legislation of the Federation (A. National Council)
Article

26

(2) The Electoral regulation of the National Council shall provide for a final allocation procedure for the entire Federal territory, through which an adjustment is made between the competing parties of the not yet allocated seats according to the principles of proportional representation.

Categories - Electoral party (Electoral rules/formula)
Source Gisbert H. Flanz ed. 2004. Constitutions of the countries of the world. Dobbs Ferry, New York: Oceana Publications.