\bib{1991/davies}
\yr 1991
\isbn 3--540--54620--0
\mr 94b:94003
\by Donald W. Davies
\book Advances in cryptology---EUROCRYPT '91: proceedings of the workshop on the theory and application of cryptographic techniques held in Brighton, April 8--11, 1991
\series Lecture Notes in Computer Science
\seriesvol 547
\publ Springer-Verlag
\publaddr Berlin
\endref