"Archived copy". www.basse-normandie.ecologie.gouv.fr. Archived from the original on 23 February 2011. Retrieved 11 January 2022.{{cite web}}: CS1 maint: archived copy as title (link)
"Archived copy". www.basse-normandie.ecologie.gouv.fr. Archived from the original on 23 February 2011. Retrieved 11 January 2022.{{cite web}}: CS1 maint: archived copy as title (link)