B.R. Nagar, E.S. Waight, H.L.C. Meuzelaar and P.G. Kistemaker, Studies on the structure and origin of soil humic acids by Curie Point pyrolysis in direct combination with low-voltage mass spectrometry, Plant Soil 43, 681-685 (1975)
R.A. Haring and A.E. de Vries, Electron transfer and reactive ionization in C + O2 collisions in the electron volt energy range, Chem. Phys. Lett. 30, 11-60 (1975)
C. Backx, R.R. Tol, G.R. Wight and M.J. van der Wiel, Dipole term and first derivative at K=0 of the generalized oscillator strength of He by keV electron impact, J. Phys. B: At., Mol. Opt. Phys. 8, 2050-2057 (1975)
