International Conference on Boundary Elements.International Conference on Boundary Elements (9th : 1987 : Univ. Stuttgart)：Boundary elements IX．V.1，Mathematical and computational aspects.CMP,1987.
International Conference on Boundary Elements.International Conference on Boundary Elements (9th : 1987 : Univ. Stuttgart)：Boundary elements IX．V.2，Mathematical and computational aspects.CMP,1987.
International Conference on Boundary Elements.International Conference on Boundary Elements (9th : 1987 : Univ. Stuttgart)：Boundary elements IX．V.3，Mathematical and computational aspects.CMP,1987.
