000 00287nam a2200109Ia 4500
008 250217s9999 xx 000 0 und d
022 _a0022247X
082 _a515.05
_bJOU
245 0 _aJournal of Mathematical Analysis and Applications
260 _bAccadamic press
_aUSA
942 _cPRBP
999 _c188811
_d188810