@inproceedings{f1f8632a83a94476bb7c8b0828504a1a,
title = "Effective Sparse Preconditioners of the Two-Level Deflation Type for Fast Solution of the Helmholtz Equation and Related Problems",
author = "Ke Chen and Hawkins, {Stuart Collin} and Hughes, {Martyn D.}",
year = "2003",
language = "English",
isbn = "0902896407",
booktitle = "Proceedings of the Fourth UK Conference on Boundary Integral Methods",
publisher = "Salford University",
note = "Fourth UK Conference on Boundary Integral Methods ; Conference date: 15-09-2003 Through 16-09-2003",
}