000			00353nam a2200145Ia 4500
008			180612s9999||||xx |||||||||||||| ||und||
020			_a198534213
041			_aen
082			_a512.943
100			_aDUFF,I.S.
245		0	_aDirect methods for sparse matrices
260			_aBerlin _bOxford university press _c1992
300			_axiv,341p.
942			_cPR
999			_c46666 _d46666