PETERKA, M., and G. AVGUŠTIN. “NUMBER AND HETEROGENEITY OF RRNA OPERONS IN RUMEN BACTERIAL MEMBERS FROM THE GENUS Prevotella”. Acta Agriculturae Slovenica, vol. 72, no. 1, Dec. 1998, pp. 57–61, https://doi.org/10.14720/aas.1998.72.1.17073.