Aurélie Bertaux Florence Le Ber Agnès Braud Michèle Trémolières Identifying Ecological Traits: A Concrete FCA-Based Approach. 224-236 2009 ICFCA http://dx.doi.org/10.1007/978-3-642-01815-2_17 conf/icfca/2009 db/conf/icfca/icfca2009.html#BertauxBBT09