<https://economix.fr/en/seminaires/behavioral-economy-working-group/recycling-contributing-to-the-stock-of-environmental-quality/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://economix.fr/en/seminaires/behavioral-economy-working-group/recycling-contributing-to-the-stock-of-environmental-quality/>