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(1) Kirk, R. O.; Dempsey, T. J. Kirk-Othmer Encyclopedia of Chemical
Technology; Wiley: New York, 1982; Vol. 19, p 246.
(2) Wulff, H. P.; Wattimena, F. Olefin epoxidation. U.S. Patent
4,021,454, May 3, 1977.
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