1. Triplett, E.W., Appl. Environ. Microbiol., 1990, vol. 56, no. 1, pp. 98–103.
2. Onishchuk, O.P. and Simarov, B.V., Russ. J. Genet., 1996, vol. 32, no. 9, pp. 1001–1010.
3. Provorov, N.A. and Vorob’ev, N.I., Geneticheskie osnovy evolyutsii rastitel’no-mikrobnogo simbioza (Genetic Bases of Evolution of Plant–Microbe Symbiosis), Tikhonovich, I.A., Ed., St. Petersburg Inform- Navigator, 2012.
4. Onishchuk, O.P., Kurchak, O.N., Sharypova, L.A., Provorov, N.A., and Simarov, B.V., Russ. J. Genet., 2001, vol. 37, no. 11, pp. 1266–1271.
5. Winarno, R. and Lie, T.A., Plant Soil, 1979, vol. 51, no. l, pp. 135–142.