H. Al-Jobury, S., and I. I. Al-Sanjari. “Study on Outer Cell of Moraxella Catarrhalis Isolated from Respiratory System Infections by Transmission Electron Microscopy”. Rafidain Journal of Science, vol. 17, no. 13, Dec. 2006, pp. 185-92, doi:10.33899/rjs.2006.44347.