Spaink HP (2000). "Root nodulation and infection factors produced by rhizobial bacteria". Annual Review of Microbiology. 54 (1): 257–288. doi:10.1146/annurev.micro.54.1.257. PMID11018130.
Govers F, Moerman M, Downie JA, Hooykaas P, Franssen HJ, Louwerse J, van Kammen A, Bisseling T (October 1986). "Rhizobium nod genes are involved in inducing an early nodulin gene". Nature. 323 (6088): 564–466. Bibcode:1986Natur.323..564G. doi:10.1038/323564a0. S2CID4324682.
Govers F, Moerman M, Downie JA, Hooykaas P, Franssen HJ, Louwerse J, van Kammen A, Bisseling T (October 1986). "Rhizobium nod genes are involved in inducing an early nodulin gene". Nature. 323 (6088): 564–466. Bibcode:1986Natur.323..564G. doi:10.1038/323564a0. S2CID4324682.
Spaink HP (2000). "Root nodulation and infection factors produced by rhizobial bacteria". Annual Review of Microbiology. 54 (1): 257–288. doi:10.1146/annurev.micro.54.1.257. PMID11018130.
Govers F, Moerman M, Downie JA, Hooykaas P, Franssen HJ, Louwerse J, van Kammen A, Bisseling T (October 1986). "Rhizobium nod genes are involved in inducing an early nodulin gene". Nature. 323 (6088): 564–466. Bibcode:1986Natur.323..564G. doi:10.1038/323564a0. S2CID4324682.