. . . . . "2009" . . . . . . "Malam Issa Oumarou, Canc\u00E8s B., Dumay Fr\u00E9d\u00E9ric, Gommeaux M., Marin Bernard, Morvan Xavier, Ponthieu M., Cerdan Olivier, Bourguignon Anne, Desprats J.F., Garrido Fran\u00E7is, Joulian Catherine, Chevrel S., Rajot J.L., Marticor\u00E9na B., Valentin C., Sannier C., Beaugendre N., Dazin F., Fontanot F., Jacquet G., Versmessen P., Stal L.J., Baghdadi N., Bertrand Isabelle, Alavoine Gonzague, Larroque C., Van Wesemael Bas. Biological soil crusts vulnerability and soil surface disturbance in Sahelian zone. May 2009, Strasbourg, France. pp.1" . . . "Vuln\u00E9rabilit\u00E9 des cro\u00FBtes biologiques et d\u00E9gradation des sols en zone sah\u00E9lienne" .