↑ Demarinis, R. M.; Boehm, J. C.; Dunn, G. L.; Hoover, J. R. E.; Uri, J. V.; Guarini, J. R.; Phillips, L.; Actor, P.; Weisbach, J. A. (1977). “Semisynthetic cephalosporins. Synthesis and structure-activity relations of analogs with 7-acyl groups derived from 2-(cyanomethylthio)acetic acid or 2-[(2,2,2-trifluoroethyl)thio]acetic acid and their sulfoxides and sulfones”. Journal of Medicinal Chemistry 20 (1): 30–5. PMID319233. doi:10.1021/jm00211a006.
