Van Spanning, R. J., Wansell, C. W., Reijnders, W. N., Harms, N., Ras, J., Oltmann, L. F., & Stouthamer, A. H. (1991). A method for introduction of unmarked mutations in the genome of Paracoccus denitrificans: Construction of strains with multiple mutations in the genes encoding periplasmic cytochromes c550, c551i, and c553i.

Van Spanning, R J., C W. Wansell, W N. Reijnders, N. Harms, J. Ras, L F. Oltmann, and A H. Stouthamer. A Method for Introduction of Unmarked Mutations in the Genome of Paracoccus Denitrificans: Construction of Strains With Multiple Mutations in the Genes Encoding Periplasmic Cytochromes C550, C551i, and C553i. 1991.

Van Spanning, R J., et al. A Method for Introduction of Unmarked Mutations in the Genome of Paracoccus Denitrificans: Construction of Strains With Multiple Mutations in the Genes Encoding Periplasmic Cytochromes C550, C551i, and C553i. 1991.