Tzamtzi M, Tsinias J. Explicit formulas of feedback stabilizers for a class of triangular systems with uncontrollable linearization. Systems & control letters. 1999;38:115–126.

Tzafestas SG, Tzamtzi MP, Rigatos GG. Autonomous robot motion planning and control in uncertain environments: Overview and a new algorithm based on sliding-mode control. In: Advances in Intelligent Autonomous Systems. Springer; 1999. pp. 267–288.

Tzamtzi MP, Tzafestas SG. Stability robustness of feedback linearisable systems with input unmodelled dynamics. IEE Proceedings-Control Theory and Applications. 1999;146:77–83.

Tzamtzi MP, Tzafestas SG. A small gain theorem for locally input to state stable interconnected systems. Journal of the Franklin Institute. 1999;336:893–901.