REFERENCES
- Birss , R. R. , et al. ( 1976 ). IEEE Trans. Magnet. Mag-12:(6).
- Boucher , R. F. , and Lua , A. C. ( 1982 ). IEEE Trans. Magnet. Mag-18:(6).
- Boucher , R. F. , and Okeke , O. O. ( 1987 ). Filtech Conference, The Filtration Society, Utrecht, NL.
- Frantz , S. G. ( 1937 ). United States Patent 2074085 .
- Oder , R. R. ( 1976 ). IEEE Trans. Magnet. Mag-18:(6).
- Orr , C. ( 1977 ). Filtration (Principles and Practices) , Part 1, Marcel Dekker Inc. , New York .