On combined symbol-and-bit error-control [4, 2] codes over {0, 1}8 to be used in the (4, 2) concept fault-tolerant computer. - Wil J. van Gils; Jean-Paul Boly (IEEE Trans. Inf. Theory, 1987)

Codes for combined symbol and digit error control. - Jean-Paul Boly; Wil J. van Gils (IEEE Trans. Inf. Theory, 1988)

The ESPRIT Project CAFE - High Security Digital Payment Systems. - Jean-Paul Boly; Antoon Bosselaers; Ronald Cramer; Rolf Michelsen; Stig Fr. Mjølsnes; Frank Muller; Torben P. Pedersen; Birgit Pfitzmann; Peter de Rooij; Berry Schoenmakers; Matthias Schunter; Luc Vallée; et al. (ESORICS, 1994)