Walter, A., Knapp, B. A., Farbmacher, T., Ebner, C., Insam, H., & Franke‐Whittle, I. H. (2012). Searching for links in the biotic characteristics and abiotic parameters of nine different biogas plants. Blackwell Publishing.

Walter, Andreas, Brigitte A. Knapp, Theresa Farbmacher, Christian Ebner, Heribert Insam, e Ingrid H. Franke‐Whittle. Searching for Links in the Biotic Characteristics and Abiotic Parameters of Nine Different Biogas Plants. Blackwell Publishing, 2012.

Walter, Andreas, et al. Searching for Links in the Biotic Characteristics and Abiotic Parameters of Nine Different Biogas Plants. Blackwell Publishing, 2012.