Kämpfer, P., Busse, H.-J., Criscuolo, A., Bizet, Ch., Clermont, D., McInroy, J.A., Glaeser, S.P. 2019. Pigmentiphaga humi sp. nov., isolated from soil amended with humic acid. Int. J. Syst. Evol. Microbiol. 69 : 1573-1578.