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H. K. Geiss, H. D. Piotrowski, V. Hingst: Evaluation of API 20 NE in routine diagnostics of nonfermenting gram-negative rod-shaped bacteria. In: Zentralblatt für Bakteriologie, Mikrobiologie und Hygiene. Series A: Medical Microbiology, Infectious Diseases, Virology, Parasitology. Band259, Nr.1, Februar 1985, S.35–42, doi:10.1016/s0176-6724(85)80005-5, PMID 3890425.