MICROMAGNETIC STUDIES OF DISCRETE TRACKS USING LORENTZ MICROSCOPY T. A. Nguyen, I. R. McFadyen, C. Hwang et P. S. Alexopoulos J. Phys. Colloques, 49 C8 (1988) C8-1995-C8-1996 DOI: 10.1051/jphyscol:19888905