1. Boche?ski, J. M. (1956). Formale Logik. München: Verlag Karl Alber, 1970 (3rd ed.).
2. Brough, John (1951). ?Theories of general linguistics in the Sanskrit grammarians? Transactions of the Philological Society, pp. 27?46.
3. Brough, John (1952). ?275?02 theory of language Bulletin of the School of Oriental and African Studies 14: 73?77.
4. Brough, John (1953). ?Some Indian theories of meaning? Transactions of the Philological Society, pp. 161?176.
5. Chatterji, Durgacharan (1929?30). A note on the Prama? $$\underset{\raise0.3em\hbox{$\smash{\scriptscriptstyle\cdot}$}}{n}$$ asamuccaya Annals of the Bhandarkar Oriental Research Institute, 11: 195?196.