1. and , Atomic Energy of Canada, Ltd. Rep. CRDC-720 or AECL-692 (1958).
2. USAEC Rep. UAPD-TM-185 and WAPD-TM-255 (1960).
3. , , and , USAEC Rep. BMI-1533 (1961).
4. and , United Kingdom Rep. AERE-M-969 (1963).
5. , , and , USAEC Rep. BMI-1623 (1963).