1. On the factorization of rational matrices;Youla;IEEE Trans. Inform. Theory,1961
2. Caines, P. E., Ph.D. Thesis, Imperial College, 1970.
3. “Algebra.”;McLane,1967
4. On the factorization of operators in Hilbert spaces;Gohberg;Amer. Math. Soc. Trans.,1966
5. “Introduction to Linear System Theory.”;Chen,1970