1. Review of the oxidative properties of trivalent manganese compounds with respect to their analytical use;Barek;Chem. Listy,1975
2. The determination of mandelic acid with a tervalent manganese standard solution in perchloric acid medium;Barek;Talanta,1974
3. 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
4. Reaction of peroxides with manganese dioxide and manganous hydroxide. I. Determination of hydrogen peroxide;Berka;Cesk. Farm,1972
5. Reaction of peroxides with manganese dioxide and manganous hydroxide. II. Determination of hydrogen peroxide and some organic peroxides in mixture;Berka;Chem. Listy,1973