A. Hilger
W.T. Williams

Eenshuistra, P. J., Bonnie, J. H. M., & Hopman, H. J. (1987). Quantum-state detection of particles effusing from an H2 ion source. In W. T. Williams (Ed.), XVIII International Conference on Phenomena in Ionized Gases, Swansea, 13th-17th July 1987 : Contributed Papers (pp. 468–469).