1. Takahashi, I., Genetic Transformation of Bacillus subtilis by Extracellular DNA, Biochem. Biophys. Res. Commun., 1962, vol. 7, no. 6, pp. 467–470.
2. Ephrati-Elizur, E., Spontaneous Transformation in Bacillus subtilis, Genet. Res., 1968, vol. 11, no. 1, pp. 83–96.
3. Lotareva, O.V. and Prozorov, A.A., Transfer of a Cryptic Plasmid between Bacillus subtilis Cells by Spontaneous Transformation, Mikrobiologiya, 1999, vol. 68, no. 4, pp. 565–567 [Microbiology (Engl. Transl.), vol. 68, no. 4, pp. 491–492].
4. Lotareva, O.V. and Prozorov, A.A., Effect of the Clay Minerals Montmorillonite and Kaolinite on the Genetic Transformation of Competent Bacillus subtilis Cells, Mikrobiologiya, 2000, vol. 69, no. 5, pp. 681–685 [Microbiology (Engl. Transl.), vol. 69, no. 5, pp. 571–574].
5. Dunny, E., Brown, B., and Clewell, D., Induced Cell Aggregation and Mating in Streptococcus faecalis: Evidence for Bacterial Sex Pheromones, Proc. Natl. Acad. Sci. USA, 1978, vol. 75, no. 8, pp. 3479–3483.