<Li> Progressive utilization theory </Li> <Li> Social market economy, also known as Soziale Marktwirtschaft </Li> <Li> Socialist market economy </Li> <P> Socialist economic systems (all of which feature social ownership of the means of production) can be subdivided by their coordinating mechanism (planning and markets) into planned socialist and market socialist systems . Additionally, socialism can be divided based on their property structures between those that are based on public ownership, worker or consumer cooperatives and common ownership (i.e. non-ownership). Communism is a hypothetical stage of socialist development articulated by Karl Marx as "second stage socialism" in Critique of the Gotha Program, whereby the economic output is distributed based on need and not simply on the basis of labor contribution . </P>

Which of the following is not one of the three prevalent approaches to coordination