1. Roden, M.S.: ‘Digital communication systems design’, (Prentice Hall New Jersey 1988)
2. Schwartz, M.: ‘Information transmission, modulation and noise’, (McGraw-Hill Publishing Co. 1990)
3. Perez, R., Gavan, J., ‘Handbook of electromagnetic compatibility’, Radio systems parameters and performance criteria concerning computation and mitigation of EMI effects, (Academic Press 1995),20,
4. Johnson, D., Johnson, J., and Moore, H.: ‘A handbook of active filters’, (Prentice Hall New Jersey 1980)