1. 1) M. Ahlers: Prog. Mater. Sci. 30 (1986) 135–186.
2. 2) F. C. Lovey and V. Torra: Prog. Mater. Sci. 44 (1999) 189–289.
3. 3) H. Matsuhisa: Vibration Control of Ropeway Carriers, (Adaptronics and Smart Structures), H. Janocha Editor, Springer 1999, pp. 350–370.
4. 4) G. Hirsch: Adaptronics in Civil Engineering Structures, (Adaptronics and Smart Structures), H. Janocha Editor, Springer 1999, pp. 334–350.
5. 5) V. Torra, A. Isalgue and F. C. Lovey: Proc. of SPIE, Smart Structures and Materials 2000: Smart Systems for Bridges, Structures and Highways, S. C. Liu Editor, Vol. 3988, pp. 244–251.