1) Levison, M. E. & Kaye, D.: Pneumonia caused by gram-negative bacilli, an overview. Rev. Infect. Dis., 7 (Suppl. 4): s656-665, 1985.
2) Crane, L. R. & Komshian, S.: Gram-negative bacillary pneumonias. In: Respiratory Infections, Diagnosis and Management, 2nd ed. (Pennington, J. E., ed.), p.314-340, Raven Press, New York, 1988.