https://assoprommata.org/spip.php?rubrique6
https://assoprommata.org/IMG/pdf/manueldetractionanimalemoderne.pdf?1089/d9faf66f8bea37ea4b2e6e38305e3f382212865c
http://www.civam-bretagne.org/files/fil_bd/Energie/Rapport_Etude_TA_Bretagne.pdf
https://assoprommata.org/IMG/pdf/posters_tech_bio.pdf?786/5e668b3ef670861c6f2d5ee541d264b315e47bf9