1. Die Konstruktion der Tschebyscheff Approximierenden bei der Anpassung mit exponentialsummen;Braess;J. Approx. Theory,1970
2. On approximations by positive sums of powers;Cantor;Siam J. Appl. Math.,1970
3. P.P.N. de Groen, The fit of a sum of exponentials to data, Submitted for publication.
4. A numerically reliable algorithm for fitting a sum of exponentials or sinusoids to noisy data;De Moor,1985
5. A geometrical strategy for the identification of state space models of linear multivariable systems with singular value decomposition;De Moor;10th World Congress of IFAC,1987