000 00269nam a2200121Ia 4500
008 210409s9999 xx 000 0 und d
022 _a0734-2071
082 _aCSYA 10
245 0 _aACM TRANSACTIONS ON COMPUTER SYSTEMS
260 _bACM
490 _v30
942 _cBV
999 _c94518
_d94518