Details Details PDF BIBTEX RIS Title Four degrees of sovereignty Journal title ACADEMIA. The magazine of the Polish Academy of Sciences Yearbook 2016 Issue Nr 3 (47) Singularity Authors Kleer, Jerzy Keywords public goods ; public goods and their future Divisions of PAS Popularnonaukowe Coverage 18-21 Publisher Polish Academy of Sciences Date 30.09.2016 Type Article Identifier 1731-7401 Source ACADEMIA - The magazine of the Polish Academy of Sciences; 2016; Nr 3 (47) Singularity; 18-21 Language eng <div class="test"></div>