000			00289nam a2200121Ia 4500
008			230413s9999||||xx |||||||||||||| ||und||
082			_a35GR
100			_aGrisvard, P.
245		0	_aSingularities in boundary value problems.
260			_bSpringer-Verlag
260			_c1992
942			_cBooks
999			_c1479 _d1479