1. . , , , , and , “Book of Abstracts, Society of Magnetic Resonance in Medicine, Ninth Annual Meeting 1990,” p. 1099, Society of Magnetic Resonance in Medicine, New York, 1990.
2. . , , , and “Book of Abstracts, Society of Magnetic Resonance in Medicine, Amsterdam, (1989).
3. . , , , , , and , “Book of Abstracts, Society of Magnetic Resonance in Medicine, Seventh Annual Meeting 1988,” p. 311, Society of Magnetic Resonance in Medicine, San Francisco, 1988.