Key_exch_sys.ps.gz Buchmann, D"ullmann, Williams On the complexity and efficiency of a new key exchange system (EuroCrypt 1989) zero_know.ps.gz Buchmann, Biehl, Meyer, Thiel, Thiel Tools for proving zero knowledge (EuroCrypt 1992) super_comp_cores.ps.gz Ingrid Biehl Definition and Existence of Super Complexity Cores (ISAAC'94) prot_DL_rqo.ps.gz Biehl, Buchmann, Thiel Cryptographic Protocols Based on Discrete Logarithms in Real-quadratic orders (CRYPTO94) crypto_ell.ps.gz Bernd Meyer, Volker M"uller A Public Key Cryptosystem Based on Elliptic Curves over Z/nZ Equivalent to Factoring (Proceedings if Eurocrypt 1996)