Gradevinska Knjiga
B. Perovic , D. Tosic

Vermeer, A., Hopman, H. J., Matitti, T., & Kistemaker, J. (1966). Survey of instabilities in a beam-plasma experiment. In B. Perovic & D. Tosic (Eds.), Proceedings of the Seventh International Conference on Phenomena in Ionized Gases, Beograd, 22-27 August 1965, Vol. 2 (pp. 386–393).