1. H. Nishihara, Nucl. Instr. Meth. 54 (1967) 42.
2. J. Borggreen, Phys. Lett. 25 B (1967) 402.
3. F. Adams, Atomic Energy Review 5 (1967) 31.
4. Yu. K. Akimov, Poluprovodnikovye Detectory Yadernyh Chiastitz i
ih Primenenie, Atomizdat, Moscova, 1967.
5. E. Kovalski, Nuclear Electronics, Springer, Berlin, 1970, translated
in russian.