• L. Vriens, J. A. Simpson and S. R. Mielczarek, Tests of born approximations: Differential and total 23S,21P,and 21S cross sections for excitation of He by 100- to 400-eV electrons, Phys. Rev. 165, 7-15 (1968)

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  • G. A. Stevens and A. E. de Vries, The influence of the distribution of atomic masses within the molecule on thermal diffusion: II. Isotopic methane and methane/argon mixtures, Physica 39, 346-360 (1968)

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  • A. C. Levi, F. R. McCourt and A. Tip, Electric field Senftleben-Beenakker effects, Physica 39, 165-204 (1968)

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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. Kistemaker: Some reflections at the end of the conference In: A Survey of Phenomena in Ionized Gases : Invited Papers : a Collection of Invited Papers presented at the Eighth International Conference on Phenomena on Ionized Gases, IAEA, 1968. - pp. 683-691

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