Rus, B., Zeitoun, P., Mocek, T., Sebbam, S., Kálal, M., Demir, A., Jamelot, G., Klisnick, A., Králiková, B., Skála, J., Tallents, G. J. Investigation of Zn and Cu prepulse plasmas relevent to collisional excitation x-ray lasers. Physical Review A. 1997, 56(-), 4229-4241. ISSN 1050-2947. E-ISSN 2469-9934.