P. De Bi?vre: Editorial/Introduction to this volume.- F.T. Peters, H.H. Maurer: Bioanalytical method validation and its implications for forensic and clinical toxicology A review.- I. Kuselman, B. Anisimov, A. Shenhar, A. Lepek: Validation of a computer program for atomic absorption analysis.- G.A. Ross: Instrumental validation in capillary electrophoresis and checkpoints for method validation.- L. Huber, H. Wiederoder: Qualification and validation of software and computer systems in laboratories. Part 1.- M. Buzoianu, H.Y. Aboul-Enein: Clinical reference materials for the validation of the performance of photometric systems used for clinical analyses.- St. L.R. Ellison, A. Williams: Measurement uncertainty and its implications for collaborative study method validation and method performance parameters.- L. Huber: Qualification and validation of software and computer systems in laboratories, Part 2.- L. Huber: Qualification and validation of software and computer systems in laboratories, Part 3.- L. Huber: Qualification and validation of software and computer systems in laboratories, Part 4.- S. Seno, S. Ohtake, H. Kohno: Analytical validation in practice at a quality control laboratory in the Japanese pharmaceutical industry.- R. Bettencourt, da Silva et al.: Validation of the uncertainty evaluation for the determination of metals in solid samples by atomic spectrometry.- R.J. Wells: Validation requirements for chemical methods in quantitative analysis, horses for courses?.- R.J. Wells: Validation requirements for chemical methods in quantitative analysis, horses for courses?.- Stefan, Aboul-Enein: Validation criteria for developing ion selective membrane electrode for analysis of pharmaceuticals.- S. K?ppers: Is the estimation of measurement uncertainty a viable alternative to validation?.- R.C. Diaz et al.: Validation of an HPLC method for the determination of p-dichlorobenzene and naphthalene in mothrepellents.- V.J. Barwick et al.: The evaluationof measuremenl3)