@article{
DeS:99-07,
author={B. {D}e Schutter},
title={Minimal State-Space Realization in Linear System Theory: {A}n
Overview},
journal={Journal of Computational and Applied Mathematics, \normalfont Special
Issue on Numerical Analysis in the 20th Century -- Vol.\ I: Approximation
Theory},
volume={121},
number={1--2},
pages={331--354},
month=sep,
year={2000},
doi={
10.1016/S0377-0427(00)00341-1}
}