1. J. A. Ball, N. Cohen and A. C. M. Ran, “Inverse Spectral Problems for Regular Improper Rational Matrix Functions,” in Topics in Interpolation Theory of Rational Matrix Functions (ed. I. Gohberg), OT 33, Birkhäuser Verlag, Basel Boston Berlin, pp. 123–175, 1988.
2. J. A. Ball, I. Gohberg and L. Rodman, “Realization and Interpolation of Rational Matrix Functions,” in Topics in Interpolation Theory of Rational Matrix Functions (ed. I. Gohberg), OT 33, Birkhauser Verlag, Basel Boston Berlin, pp. 1–72, 1988.
3. J. A. Ball, I. Gohberg and L. Rodman, Interpolation of Rational Matrix Functions,Birkhäuser Verlag, OT 45, Basel Boston Stuttgart, 1990.
4. J. A. Ball, I. Gohberg and L. Rodman, “Two-sided Lagrange-Sylvester Interpolation Problems for Rational Matrix Functions,” in Proceeding Symposia in Pure Mathematics, Amer. Math. Soc., to appear.
5. J. A. Ball and M. Rakowski, “Zero-Pole Structure of Nonregular Rational Matrix Functions,” to appear.