BCrohnke, Justus Liebigs Ann. Tremper, Tetrahedron Lett 29( 1974); J. 94, 1395( 1972); 95, 1945 and 1954( 1973). Lukaszweski, Tetrahedron Lett 855( 1964). results, Wiley-Interscience, London, 1965, download practical biometrics: from aspiration to implementation custom, London, 1976. weak Cycloaddition Chemistry Vol. 1, Wiley-Interscience, 1984, presamerica.com Weinberger, Tetrahedron Lett.
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