1. Melnick LM, Lewis LL, Holt BD (1974) Determination of gaseous elements in metals. John Wiley and Sons, New York
2. Fest JCl, Schott R (1973) Anal Chim Acta 63:383–391
3. Gibson EK, Moore CB (1970) Anal Chem 42:461
4. Gardner RD, Ashley WH, Henicksman HL (1977) LA-6978
5. Le Duigou Y (ed) Certification of a uranium metal chemical reference material, AS/144/81