H.J. Hopman, The dispersion diagram of the plasma waves on the plasma branch in a beam-created plasma = Bir elektron huzmesi yardimiyle meydana getirilen plazmadaki dalgalarin dispersiyon diyagrami, Rev. Fac. Sci. Univers. Istanbul C 35, (1972)
H. van Dop, A.J.H. Boerboom and J.H. Los, Elastic scattering of K+ ions from diatomic molecules in the energy range from 150 to 4000 eV, Physica 61, 626-629 (1972)
F.W.E. Knoop, H.H. Brongersma and L.J. Oosterhoff, Triplet excitation of water and methanol by low-energy electronimpact spectroscopy, Chem. Phys. Lett. 13, 20-23 (1972)
