Fibrolytic activities and cellulolytic bacterial community structure in the solid and liquid phases of rumen contents Brigitte Michalet-Doreau, Isabelle Fernandez, Céline Peyron, Liliane Millet and Gérard Fonty Reprod. Nutr. Dev., 41 2 (2001) 187-194 DOI: 10.1051/rnd:2001122