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1. J. Amer. Chem. Soc. 1972. 94: 1018-1021.
Cooper R. D. G.
Structural studies on penicillin derivatives. VIII. Possible model biosynthetic route to penams and cephems.
- DOI:
http://dx.doi.org/10.1021/ja00758a064
Cooper R. D. G., Jose F. L.
Structural studies on penicillin derivatives. IX. Synthesis of thiazolidine-azetidinones.
- DOI:
http://dx.doi.org/10.1021/ja00758a065