Suzuki, M. T., Taylor, L. T., & DeLong, E. F. (2000). Quantitative Analysis of Small-Subunit rRNA Genes in Mixed Microbial Populations via 5’-Nuclease Assays. Applied and Environmental Microbiology, 66(11), 4605–4614. doi:10.1128/aem.66.11.4605-4614.2000