Hashmi, M. Experimental Plasma Physics 3 (E3), Max Planck Institute for Plasma Physics, Max Planck Society;
Hashmi, M., Oordt, A. v. d. H. v. d., & Wegrowe, J. (1970). Production and Application of Lithium and Strontium Plasma in a Q-Device. Plasma Physics, 12, 642-644.