1. C. Higgitt, M. Spring, D. Saunders, Pigment–medium interactions in oil paint films containing red lead or lead-tin yellow, National Gallery Technical Bulletin, vol. 24, National Gallery Company, London, 2003 (in press)
2. R.M.A. Heeren, J.J. Boon, P. Noble, J. Wadum, in: J. Bridgland (Ed.), 12th Triennial Meeting Lyon, ICOM Committee for Conservation Preprints, James and James, London, 1999, p. 228
3. J. van der Weerd, Ph.D. Thesis, FOM Institute for Atomic and Molecular Physics, Amsterdam, 2002
4. X-ray powder diffraction data for selected metal soaps