W. Behnen, Ch. Dauelsberg, S. Wallbaum, J. Martens, Synth. Commun. 1992, 22, 2143-2153.

J. Martens, Ch. Dauelsberg, W. Behnen, S. Wallbaum, Tetrahedron: Asymmetry 1992, 3, 347-350.

Ch. Dauelsberg, J. Martens, Synth. Commun. 1993, 23, 2091-2099.

B. T. Cho, Y. S. Chun, Ch. Dauelsberg, S. Wallbaum, J. Martens, Bull. Korean Chem. Soc. 1994, 15, 101-103.

B. T. Cho, M. H. Ryu, Y. S. Chun, Ch. Dauelsberg, S. Wallbaum, J. Martens, Bull. Korean Chem. Soc. 1994, 15, 53-57.