M. Z. Djordjevic: Stability analysis of large scale systems whose subsystems may be unstable
. Large Scale Systems 5 (1983), 255-262. MR 0746406
| Zbl 0538.93048
 D. W. Jordan, P. Smith: Nonlinear Ordinary Differential Equations. Oxford Univ. Press, Oxford 1979.
 S. R. Lee: On Lyapunov Stability of Large-scale Nonlinear Systems with Time Delays. Ph.D. Dissertation, Univ. of New Mexico, 1990.
 B. D.O. Anderson: Time delays in large scale systems. IEEE Conference on Decision and Control, Ft. Lauderdale, FL, pp. 655-660, 1979.
 I.H. Suh, Z.N. Bien: A note on the stability of large scale systems with delays
. IEEE Trans. Automat. Control AC-27 (1982), 1, 256-258. Zbl 0469.93008
 M. Fiedler, V. Pták: On matrices with non-positive off-diagonal elements and positive principal minors
. Czech. Math. J. 12 (1962), 382-400. MR 0142565