1. On the factorization of matrix-functions. (Russian) Soobshch. Akad. Nauk Gruzin. SSR 89 (1978), No. 2, 317-319.

  2. On factorization and partial indices of unitary matrix-functions of one class (with G. Janashia). Georgian Math. J. 4 (1997), No. 5, 439-442.

  3. On the factorization of unitary matrix-functions (with L. Ephremidze and G. Janashia). Proc. A. Razmadze Math. Inst. 116 (1998), 101-106.

  4. A method of approximate factorization of positive definite matrix functions (with G. Janashia). Studia Math. 137 (1999), No. 1, 93-100.

  5. On approximate factorization of positively definite matrix-functions (with L. Ephremidze and G. Janashia). (Russian) Uspekhi Mat. Nauk 54 (1999), No. 6(330), 161-162; English transl.: Russian Math. Surveys 54 (1999), No. 6, 1246-1247.

  6. On spectral factorization algorithm for polynomial matrix-functions (with L. Ephremidze and G. Janashia). SIAM J. Appl. Math. 29 (2003), No. 1.