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Halpern B, Close VA, Wegmann A, Westley JW.Halpern B, et al. Among authors: westley jw.Tetrahedron Lett. 1968 May;(27):3119-22. doi: 10.1016/s0040-4039(00)89567-2.Tetrahedron Lett. 1968.PMID: 5655290No abstract available.