Analysis of information sources in references of the Wikipedia article "Jevonsen paradoxa" in Basque language version.
<ref>
tag; name "Wackernagel" defined multiple times with different content<ref>
tag; name "Saunders" defined multiple times with different content<ref>
tag; name "Small" defined multiple times with different content<ref>
tag; name "Energy Efficiency Policies" defined multiple times with different content