by Smith, B.A., Marston, P.G., Pourrahini, S., Piec, Z.S., Kochan, S.J., Camille, R.J., Vieira, R., Pisera, J.W., East, G.H., Titus, P.H., Myatt, S.J., Martovetsky, N.
Published in IEEE transactions on magnetics (01.07.1994)