000 00283nam a2200109Ia 4500
008 201121s9999 xx 000 0 und d
100 _aMatsushima,Y
245 0 _aOsaka Journal of Mathematics
260 _boOsaka Japan University Depatment of Mateics
300 _c930
942 _cBV
999 _c16427
_d16427