1. Preparation, stability, and determination of the titer of standard solutions of the fluoride complex of trivalent managanese;Barek;Microchem. J,1982
2. Barek, J., Berka, A., and Skokánková, H., A study of electrochemical and spectrophotometric properties of the Mn(III)/Mn(II) system in a medium of potassium fluoride and sulfuric acid. Microchem. J., in press.
3. Barek, J., Berka, A., and Skokánková, H., Determination of benzene polyhydroxy and aminohydroxy derivatives with a standard solution of the fluoride complex of trivalent manganese. Microchem. J., in press.
4. The standardization of hydroquinone solutions;Barek;Anal. Chim. Acta,1975
5. Oxydation von Benzidin, o-Tolidin und o-Dianisidin mittels des Diphosphatkomplexes des dreiwertigen Mangans und des Mangan(III) Sulfats;Barek;Collect. Czech. Chem. Commun,1976