J.H. Townsend, L. Carlyle, A. Burnstock, M. Odlyha and J.J. Boon: Nineteenth-century paint media: The formulation and properties of megilpsIn: Painting Techniques, History, Materials and Studio Practice : Contributions to the Dublin Congress 7-11 September 1998 /ed. A. Roy and P. Smith, International Institute for Conservation of Historic and Artistic Works, 1998. - pp. 205-210
K.M. Groen, Inez D. van der Werf, K.-J. van den Berg and J.J. Boon: The scientific examination of Vermeer's Girl with a Pearl EarringIn: Vermeer Studies : Symposium Papers XXXIII Center for Advanced Study in the Visual Arts /ed. I. Gaskell and M. Jonker, National Gallery of Art, 1998. - pp. 168-183
N. Wyplosz, R.M.A. Heeren and J.J. Boon: Analyses of natural organic pigments by ITMS, FTMS and TOF-MSIn: Proceedings of the 46th ASMS Conference on Mass Spectrometry and Allied Topics, May 31 - June 4, 1998, Orlando, Florida, [s.n.], 1998. - pp. 1012-1013
L.D. Noordam: Time-resolved photoelectron emission from Rydberg atomsIn: Resonance Ionization Spectroscopy : Ninth International Symposium, Manchester, United Kingdom June 1998 /ed. J.C. Vickerman, I. Lyon, N.P. Lockyer and J.E. Parks, AIP, 1998. - pp. 95-102
B. Goddard, H.J. Hopman and J.N. Tan: The influence of preparation methodology on high voltage behaviour of alumina insulators in vacuumIn: Discharges and Electrical Insulation in Vacuum : Proceedings of the XVIIIth International Symposium, 17.-21. Aug. 1998, Eindhoven, vol. 2, New York: IEEE, 1998. - pp. 735-738
L.D. Noordam, M. Drabbels and C.W. Rella: Infrared streak cameraIn: Ultrafast Phenomena XI : Proceedings of the 11th International Conference, Garmisch-Partenkirchen, Germany, July 12-17, 1998 /ed. T. Elsaesser, J.G. Fujimoto, D.A. Wiersma and W. Zinth, Cham: Springer, 1998. - pp. 97-99
K.-J. van den Berg, J. van der Horst, J.J. Boon, N. Shibayama and E.R. de la Rie: Mass spectrometry as a tool to study ageing processes of diterpenoid resins in works of art: GC- and LC-MS studiesIn: Advances in Mass Spectrometry ; vol. 14 : Proceedings of the 14th International Mass Spectrometry Conference held in Tampere 25-29 August 1997 /ed. E.J. Karjalainen, A.E. Hesso, J.E. Jalonen and U.P. Karjalainen, Elsevier B.V., 1998. - pp. 563-573
E.R.E. van der Hage, P.J.W. Schuyl, C.J. van Platerink, C.F. Martens, R.M.A. Heeren, J.J. Boon and B.E. Winger: Characterization of organometallic complexes by Fourier transform - ion cyclotron resonance - mass spectrometryIn: Proceedings ASMS : The 45th ASMS Conference on Mass Spectrometry and Allied Topics, June 1-5, 1997, Palm Springs, California, [s.n.], 1997.
P.B. O'Connor, M.C. Duursma, R.M.A. Heeren and J.J. Boon: Direct MALDI mass spectrometry of algae, cyanobacteria, and diatom cellIn: Proceedings ASMS : The 45th ASMS Conference on Mass Spectrometry and Allied Topics, June 1-5, 1997, Palm Springs, California, [s.n.], 1997.
A. Phenix: The composition and chemistry of eggs and egg temperaIn: Early Italian Paintings : Techniques and Analysis, Symposium, Maastricht, 9-10 October 1996 /ed. T. Bakkenist, R. Hoppenbrouwers and H. Dubois, Limburg Conservation Institute, 1997. - pp. 11-20