Zhang, Xiaoyong, Birun Lin, Xiangyang Gao, and Huifang Shen. 2010. “Enhancement of Wanlongmycin Production by Nitrogen Ion Beam Implantation”. Electronic Journal of Biotechnology 13 (1). Valparaíso, Chile:0-0. https://www.ejbiotechnology.info/index.php/ejbiotechnology/article/view/v13n1-9.