@incollection{11935,
author = {Wolfgang Hackbusch and Boris N. Khoromskij},
title = {{$ \mathscr{H} $-matrix approximation on graded meshes}},
booktitle = {The mathematics of finite elements and applications X, MAFELAP 1999\,:\,proceedings
of the 10th conference, Brunel Univ., Uxbridge, Middlesex, GB, June 22-25, 1999},
editor = {J. R. Whiteman},
publisher = {Elsevier},
address = {Amsterdam [u. a.]},
year = {2000},
pages = {307--316},isbn={0-08-043568-8},
}