LDR 00469nam a2200145Ia 4500 008 170106s2008||||xx |||||||||||||| ||und|| 020 _a9783540771463 082 _a515.353 _bBEB 100 _aBebendorf, Mario 245 0 _aHierarchical matrices : a means to efficiently solve elliptic boundary value problems 260 _aNew York _bSpringer _c2008 300 _axvi, 290p. ;23.5cm. 440 _aLecture notes in computational science and engineering 942 _cBK 999 _c17101 _d17101