Information Processing Letters, Volume 70

Volume 70, Number 1, 16 April 1999

Volume 70, Number 2, 30 April 1999

Volume 70, Number 3, 14 May 1999

Volume 70, Number 4, 28 May 1999

Volume 70, Number 5, 21 June 1999

Volume 70, Number 6, 30 June 1999