1. Review, Analytical Chemistry of Titanium and Zirconium;ELWELL;Metal Industry,1960
2. Analytical Chemistry of Titanium Metals and Compounds;CODELL,1959
3. Review, The Analytical Chemistry of Zirconium;MILNER;Analyst,1960
4. Review, Analytical Chemistry of Niobium and Tantalum;ELWELL;Anal. Chim. Acta,1962
5. British Standard 1991: Part 1: 1954, Part 2: 1961 and British Standard 2474: 1954.