L. Nyulászi, P. Várnai, W. Eisfeld, and M. Regitz
Regioselectivity in the cycloaddition reaction between phosphaacetylene and diazomethane: An ab initio study
J. Comput. Chem., 1997, 18, 609-616.

W. Eisfeld and M. Regitz
Energetic and structural aspects of the solvation of anions in liquid SO2
J. Am. Chem. Soc., 1996, 118, 11918-926.

M. Dotzauer, W. Eisfeld, E. Vilsmaier, K. Fröhlich, U. Bergsträßer, and C. Tetzlaff
A strained aminoazoniatricyclene species: Result of an intramolecular stabilization of a cyclopropaniminium ion by an amino moiety
J. Org. Chem., 1996, 61, 8526-32.

W. Eisfeld, E. Fuchs, and M. Regitz:
(2,3-Di- tert.-butylcyclopropen-1-ylidene)-mesitylphosphane, (2,3-Di- tert.-butylcyclopropen-1-ylidene)-(trimethylsilyl)-phosphane, and (2,3-Di- tert.-butylcyclopropen-1-ylidene)-pivaloylphosphane
Brauer Handbook, 2nd edn., Thieme, Stuttgart, 1996, 3, 44-47.

M. van der Sluis, F. Bickelhaupt, N. Veldman, H. Kooijman, A. L. Spek, W. Eisfeld, and M. Regitz
Synthesis and characterization of β-phosphaenones - An investigation on the conjugative properties of the P=C bond
Chem. Ber., 1995, 128, 465-76.

K. K. Laali, B. Geißler, O. Wagner, J. Hoffmann, R. Armbrust, W. Eisfeld, and M. Regitz
Generation of the first persistent phosphirenylium cation
J. Am. Chem. Soc., 1994, 116, 9407-08.