● Young JM,Kuykendall LD,Martínez-Romero E,Kerr A,Sawada H (2001). A revision of Rhizobium Frank 1889, with an emended description of the genus, and the inclusion of all species of Agrobacterium Conn 1942 and Allorhizobium undicola de Lajudie et al. 1998 as new combinations: Rhizobium radiobacter, R. rhizogenes, R. rubi, R. undicola and R. vitis.
Int. J. Syst. Evol. Microbiol. 51, 89-103.
● Riker AJ, Banfield WM, Wright WH, Keitt GW, Sagen HE (1930). Studies on infectious hairy root of nursery apple trees.
Journal of Agricultural Research 41, 507–540.
