● Tsukamura M (1982). Numerical analysis of the taxonomy of Nocardiae and Rhodococci. Microbiol. Immunol.26, 1101-19. ● Klatte S,Rainey FA,Kroppenstedt RM (1994). Transfer of Rhodococcus aichiensis Tsukamura 1982 and Nocardia amarae Lechevalier and Lechevalier 1974 to the genus Gordona as Gordona aichiensis comb. nov. and Gordona amarae comb. nov. Int. J. Syst. Bacteriol.44, 769-73. ● Stackebrandt E,Rainey FA,Ward-rainey NL (1997). Proposal for a new hierarchic classification system, Actinobacteria classis nov. Int. J. Syst. Bacteriol.47, 479-491.