1. E. Eschenhof, W. Vetter and W. Arnold, data on file, F. Hoffmann-La Roche & Co. Ltd., Basle
2. In vitro activity of Ro 15-8074 and Ro 19-5247, two orally administered cephalosporin metabolites
3. In vitro activity and beta-lactamase stability of two oral cephalosporins, ceftetrame (Ro 19-5247) and cefetamet (Ro 15-8074)
4. Antimicrobial activity of Ro 15-8074, active metabolite of a new oral cephalosporin (Ro 15-8075), against 7,775 recent clinical isolates
5. H.-J. Egger and G. Fischer, J. Chromatogr., submitted for publication