1. Spectrophotometric Determination of Cobalt as Tetraphenylarsonium Cobalto-thiocyanate;Affsprung;Anal. Chem,1951
2. Analysis of Nickel. I. Chemical Methods;Andrew;Metallurgia,1959
3. Analysis of Nickel. I. Chemical Methods;Andrew;Metallurgia,1959
4. Analysis of Nickel. I. Chemical Methods;Andrew;Metallurgia,1959
5. Analysis of Nickel. I. Chemical Methods;Andrew;Metallurgia,1959