• B. Baranowski, A.E. de Vries, R.A. Haring and R. Paul, Thermal diffusion in systems with some transformable components, Adv. Chem. Phys. 16, 101-130 (1969)

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  • J.F.M. Aarts and F.J. de Heer, Extension of the branching-ratio method for intensity calibration between 1500 and 2600 Å, J. Opt. Soc. Am. 58, 1666-1667 (1968)

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  • J.-B. Sanders and M.W. Thompson, The generation of focused collision sequences in irradiated crystals: a calculation based on the inverse square potential, Philos. Mag. 17, 211-214 (1968)

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  • J. Schutten, Lasers, principe en toepassingen, Polytech. Tijdschr. E 23, (1968)

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  • R. Paul and A.E. de Vries, Separation of gas mixtures in chemical equilibrium in a temperature gradient. I, J. Chem. Phys. 48, 445-450 (1968)

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  • L. Vriens, C.E. Kuyatt and S.R. Mielczarek, Tests of born approximations; Differential and total cross sections for elastic scattering of 100- to 400-eV electrons by helium, Phys. Rev. 170, 163-169 (1968)

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  • F.W. Saris, W.F. van der Weg and J. Kistemaker, Characteristic X-ray production from metals by 90 keV Ar+ ion bombardment, Phys. Lett. A 26, 592-593 (1968)

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  • J. Politiek, J.H. Los and P.G. Ikelaar, Druckmessung bei Streuversuchen = Pressure measurements in scattering experiments, Vak. -Tech. 17, 150-152 (1968)

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  • W.F. van der Weg and D.J. Bierman, Multiple collisions of Ar and Cu atoms on a Cu surface, Physica 38, 406-408 (1968)

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  • W. Tebra and P.J. van Deenen, Reference current source in regulated high-voltage power supplies, Electron. Eng. 40, 574-576 (1968)

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