'Crystal and molecular structure of a synthetic compound related to the penicillins and cephalosporins, 3-benzyl 7-t-butyl 2, 2-dimethyl-8-oxo-4-thia-1 aza-6[alpha]H-bicyclo[4.2.0] octane-3[beta], 7[alpha]-dicarboxylate' (with B.F. Anderson and K. Vijayan), Bibliog. 141, 1973, n.d.