1. Evaluation of accuracy in photometric analysis;Ayres;Anal. Chem,1949
2. Analysis of drugs of the phenothiazine group III;Blazek;Cesk. Farm,1966
3. Analytical studies of phenothiazine drugs IX;Blazek;Cesk. Farm,1972
4. British Pharmacopoeia,1973
5. British Pharmacopoeia,1973