1. Applications of Phase Transfer Catalysis, part 68. Part 67: Tetrahedron Asymmetry 1998, in press.
2. (a) E. V. and ?Phase Transfer Catalysis?, 3rd Ed., VCH, Weinheim 1993.
3. (b) ?Phase Transfer Catalysis: Selected Problems and Application?, Gordon & Breach Science Publ., Reading 1992.
4. (c) ?Asymmetric Phase Transfer Reactions?, chapter 8, p. 389-411 in: Catalytic Asymmetric Synthesis, edit., VCh-Verlagsges., Weinheim 1993.
5. (d) ?Phase Transfer Catalysis: Fundamentals, Applications, and Industrial Perspectives?, Chapman & Hall, New York 1994.