1. A.D. Linney, B. Peters, Nucl. Instr. Meth. 100, 545 (1973)
2. G.A. Nicolaon, S.J. Teichner, Bull. Soc. Chim., 1906 (1968)
3. M. Cantin et al., Nucl. Instr. Meth. 118, 177 (1974) and J. Chim. Phys. 11–12, 1537 (1974)
4. J.J. Engelmann, M. Cantin, J. Phys. Colloque C3, suppl. au n°6, Tomme 39, p. C3–57 (1978)
5. M. Bourdinaud et al., Nucl. Instr. Meth. 136, 99 (1976)