Information Processing Letters, Volume 81

Volume 81, Number 1, 16 January 2002

Volume 81, Number 2, 31 January 2002

Volume 81, Number 3, 14 February 2002

Volume 81, Number 4, 28 February 2002

Volume 81, Number 5, 16 March 2002

Volume 81, Number 6, 31 March 2002