Approximation and realization using generalized orthonormal bases. - Peter S. C. Heuberger; Thomas J. de Hoog; Paul M. J. Van den Hof (ECC, 1999)

Wavelets and variance reduction in non-parametric transfer function estimation. - Sippe G. Douma; Thomas J. de Hoog; Paul M. J. Van den Hof (CDC, 2000)

A general transform theory of rational orthonormal basis function expansions. - Thomas J. de Hoog; Peter S. C. Heuberger; Paul M. J. Van den Hof (CDC, 2000)

Minimal partial realization from orthonormal basis function expansions. - Peter S. C. Heuberger; Thomas J. de Hoog; Paul M. J. Van den Hof; Zoltán Szabó 002; Jozsef Bokor (CDC, 2001)

Minimal partial realization from generalized orthonormal basis function expansions. - Thomas J. de Hoog; Zoltán Szabó 002; Peter S. C. Heuberger; Paul M. J. Van den Hof; Jozsef Bokor (Autom., 2002)

Orthonormal Basis Functions in Time and Frequency Domain: Hambo Transform Theory. - Peter S. C. Heuberger; Thomas J. de Hoog; Paul M. J. Van den Hof; Bo Wahlberg (SIAM J. Control. Optim., 2003)