● Willems A,De Ley J,Gillis M,Kersters K (1991). Comamonadaceae, a new family encompassing the acidovorans rRNA complex, including Variovorax paradoxus gen. nov., comb. nov., for Alcaligenes paradoxus (Davis) 1969. Int. J. Syst. Bacteriol. 41, 445-450.
