S. FAJDIGA, F. V. NEKREP, A. ZRIMEC, J. SALOBIR, and R. MARINŠEK-LOGAR, “The influence of various fiber supplements on quantity of microbial biomass in digestive tract of piglets determined by ATP-luciferase assay”, aas, vol. 80, no. 1, pp. 51–59, Aug. 2002, doi: 10.14720/aas.2002.80.1.15353.