Ikeda, H., Nonomiya, T., Usami, M., Ohta, T., & Ōmura, S. (1999). Organization of the biosynthetic gene cluster for the polyketide anthelmintic macrolide avermectin in Streptomyces avermitilis. The National Academy of Sciences.

Ikeda, Haruo, Tomoko Nonomiya, Masayo Usami, Toshio Ohta, and Satoshi Ōmura. Organization of the Biosynthetic Gene Cluster for the Polyketide Anthelmintic Macrolide Avermectin in Streptomyces Avermitilis. The National Academy of Sciences, 1999.

Ikeda, Haruo, et al. Organization of the Biosynthetic Gene Cluster for the Polyketide Anthelmintic Macrolide Avermectin in Streptomyces Avermitilis. The National Academy of Sciences, 1999.