J.D.J. van den Berg, K.-J. van den Berg and J.J. Boon: Chemical changes in curing and ageing oil paintsIn: 12th Triennial Meeting Lyon 29 August - 3 September 1999 ; Vol. 1, ICOM-CC ICOM Committee for Conservation, James, 1999. - pp. 248-253
R.R. Jones, J.H. Townsend and J.J. Boon: A technical assessment of eight portraits by Reynolds being considered for conservation treatmentIn: 12th Triennial Meeting Lyon 29 August - 3 September 1999 ; Vol. 1, ICOM-CC ICOM Committee for Conservation, James, 1999. - pp. 375-380
L. Carlyle, N.E. Binnie, G.A. van der Doelen, J.J. Boon, B. McLean and A. Ruggles: Traditional painting varnishes project: preliminary report on natural and artificial aging and a note on the preparation of cross-sectionsIn: Firnis : Material - Ãsthetik - Geschichte, Internationales Kolloquium, Braunschweig, 15.-17. Juni 1998 = Varnish : Material - Aesthetics - History, International Colloquium, Braunschweig, 15-17 June 1998 /ed. A. Harmssen, Herzog-Anton-Ulrich-Museum, 1999. - pp. 110-127
N. Wyplosz, P. Noble, J. Wadum, S. Bryan, A. Belu, J.J. Boon and R.M.A. Heeren: MS/MS Analysis of flavonoids by laser desorption and ionization - ion trap mass spectrometryIn: Proceedings of the 47th ASMS conference on Mass Spectrometry and Allied Topics, Dallas, Texas, June 13-17, 1999, ASMS, 1999. - pp. 982-983
R.M.A. Heeren, S. Koster, L. Drahos and K. Vékey: Determination of collisional energy transfer efficiency by FTICRMS with a novel pump-probe techniqueIn: Proceedings of the 47th ASMS conference on Mass Spectrometry and Allied Topics, Dallas, Texas, June 13-17, 1999, ASMS, 1999. - pp. 1863-1864
G.J. van Rooij, M.L. Easterling, I.J. Amster and R.M.A. Heeren: Isotope beating effects in the analysis of polymer distributions by Fourier Transform Mass SpectrometryIn: Proceedings of the 47th ASMS conference on Mass Spectrometry and Allied Topics, Dallas, Texas, June 13-17, 1999 [published on CD-ROM only], ASMS, 1999. - pp. 379-380
A.M.C. Emons and B.M. Mulder: Nodulation factors trigger an increase of fine bundles of subapical actin filaments in vicia root hairs: Implications for root hair curling around bacteriaIn: Biology of Plant-Microbe Interactions; Vol.2 : Proceedings of the 9th International Congress on Molecular Plant-Microbe Interactions, Amsterdam, the Netherlands, July 25-30, 1999 /ed. P.J.G.M. de Wit, T. Bisseling and W.J. Stiekema, International Society for Molecular Plant-Microbe Interactions, 1999. - pp. 272-276
A.W. Kleyn: Dissociation at surfaces: Barriers and fencesIn: 14th Greek Conference of Solid State Physics, Ioannina 15-18 September 1998 : Proceedings, University of Ioannina, 1999. - pp. 227-236
K.-J. van den Berg, J. van der Horst and J.J. Boon: Recognition of copals in aged resin/ oil paints and varnishesIn: 12th Triennial Meeting Lyon 29 August - 3 September 1999 ; Vol. II, ICOM-CC ICOM Committee for Conservation, James, 1999. - pp. 855-861
M. Kokkori, A. Phenix and J.J. Boon: Solvent extraction of organic compounds from oleo-resinous "megilp" paint mediaIn: 12th Triennial Meeting Lyon 29 August - 3 September 1999 ; Vol. 1, ICOM-CC ICOM Committee for Conservation, James, 1999. - pp. 318-324