@incollection{:/content/books/9789210045100c001, author = "United Nations Economic Commission for Europe", title = "Avant-propos", booktitle = "Guide des meilleures pratiques pour la gestion efficace du méthane dans le secteur du pétrole et du gaz", publisher = "United Nations", year = "2020", pages = "3-3", url = "https://www.un-ilibrary.org/content/books/9789210045100c001" }