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Terent'ev, Alexander O. Krylov, Igor B. Sharipov, Mikhail Y. Kazanskaya, Zoya M. Nikishin, Gennady I. Tetrahedron, 1 , vol. 68, # 5 p. 163 - 171,9
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Hoertner, Simone R. Ritschel, Tina Stengl, Bernhard Kramer, Christian Schweizer, W. Bernd Wagner, Bjoern Kansy, Manfred Klebe, Gerhard Diederich, Francois Angewandte Chemie - International Edition, 7 , vol. 46, # 43 p. 866 - 869