Dolfini JE, Applegate HE, Bach G, Basch H, Bernstein J, Schwartz J, Weisenborn FL. A new class of semisynthetic penicillins and cephalosporins derived from D-2-(1,4-cyclohexadienyl)glycine. Journal of Medicinal Chemistry. February 1971, 14 (2): 117–9. PMID 5544394. doi:10.1021/jm00284a008.
DE 1931722,Weisenborn, Frank L.; Joseph E. Dolfini & Georges G. Bach et al.,“α-Amino-cyclohexadienyl-alkylen-penicilline und -cephalosporine, ihre Salze, und Verfahren zu ihrer Herstellung [Alpha-amino-cyclohexadienyl-alkylene-penicillins and cephalosporins, their salts, and processes for their preparation]”,发表于1970-01-08