1. The Boundary Element Method for Engineers;Brebbia,1978
2. Boundary Element Techniques—Theory and Applications in Engineering;Brebbia,1984
3. Proc. of the 1st Int. Conf. on BEM,1978
4. Proc. of the 2nd Conf. on BEM,1980
5. Proc. of the 3rd Conf. on BEM,1981