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2. Elsevier: New York, 1972, pp. 77-83
3. (a) JensenF.R., and GoldmanG., in: Friedel-Crafts and Related reactions; OlahG. (ed); Wiley Interscience, New York, 1969, Vol (III) pp 1319-1367;
4. (b) R. Taylor, in: Coprehensive Chemical Kinetics; C.H. Bamford and C.F.H. Tipper, (ed); Elsevier: New York, 1972, pp. 77-83
5. Recent developments in sulfone chemistry