Similar title to 


    <span class="person"><a href="https://pure.iiasa.ac.at/view/iiasa/2026.html">Keyfitz, N.</a></span>
  

<span xmlns="http://eprints.org/ep3/control" class="date">(1979).</span>


    <span xmlns="http://eprints.org/ep3/control" class="title"><a href="https://pure.iiasa.ac.at/cgi/users/home?screen=EPrint::View&amp;eprintid=1005"><xhtml:em xmlns:xhtml="http://www.w3.org/1999/xhtml">Understanding world models.</xhtml:em></a></span>
  


    <span xmlns="http://eprints.org/ep3/control" class="publication"><span style="font-style: italic">Systems Research</span> 24 (3) 190-199. <a href="https://doi.org/10.1002/bs.3830240304" target="_blank">10.1002/bs.3830240304</a>.</span>

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