Efficient Offline Electronic Checks (Extended Abstract). - David Chaum; Bert den Boer; Eugène van Heyst; Stig Fr. Mjølsnes; Adri Steenbeek (EUROCRYPT, 1989)

Which New RSA Signatures Can Be Computed From Some Given RSA Signatures? - Jan-Hendrik Evertse; Eugène van Heyst (EUROCRYPT, 1990)

Group Signatures. - David Chaum; Eugène van Heyst (EUROCRYPT, 1991)

Which new RSA Signatures can be Computed from RSA Signatures, Obtained in a Specific Interactive Protocol? - Jan-Hendrik Evertse; Eugène van Heyst (EUROCRYPT, 1992)

How to Make Efficient Fail-stop Signatures. - Eugène van Heyst; Torben P. Pedersen (EUROCRYPT, 1992)

Which New RSA-Signatures Can be Computed from Certain Given RSA-Signatures? - Jan-Hendrik Evertse; Eugène van Heyst (J. Cryptol., 1992)