Extensions to the root locus method. - S. E. Williamson (1971)

Genes for tRNAIle and tRNAAla in the spacer between the 16S and 23S rRNA genes of a blue-green alga: strong homology to chloroplast tRNA genes and tRNA genes of the E. coli rrnD gene cluster. - S. E. Williamson; W. Ford Doolittle (Nucleic Acids Res., 1983)