J. Boogaard and G. M. van Dijk..World Conference on Non-Destructive Testing (12th : 1989 : Amsterdam):Non-destructive testing : proceedings fo the....V.1.Elsevier,1989.
C. A. Brebbia and J. J. Connor.International Conference on Boundary Element Methods (11th : 1989 : Cambridge, Mass):Advances in boundary elements.V.2,Field and fluid flow solutions : proceedings of the ....Computational Mechanics Pub.,1989.
International Conference on Boundary Element Methods (11th : 1989 : Cambridge, Mass):Advances in boundary elements.V.2,Field and fluid flow solutions : proceedings of the ...
C. A. Brebbia and J. J. Connor.Computational Mechanics Pub.,1989.