1. A survey of the oxidizing properties of tervalent manganese compounds with respect to their analytical use (in Czech);Barek;Chem. Listy,1975
2. Oxidation of organic substances with compounds of tervalent manganese. IV. The preparation and stability of standard solutions of tervalent manganese;Barek;Chem. Anal. (Warsaw),1975
3. Oxidation of organic compounds by tervalent manganese compounds. II. Determination of Mandelic acid with a tervalent manganese standard solution in perchloric acid medium;Barek;Talanta,1974
4. Barek, J., Beneš, P., and Berka, A., Oxidation of organic compounds by tervalent manganese compounds. X. Oxidation of tartaric acid by manganic sulphate in sulphuric acid medium and by hexaquomanganese(III) ion in noncomplexing medium of perchloric Acid. To appear.
5. Oxidation of organic substances by tervalent manganese compounds. VIII. Determination of benzene polyhydroxy- and aminohydroxyderivatives with a standard solution of hexaquomanganese(III) ion in perchloric acid;Barek;Microchem. J,1977