TY - GEN A1 - Zheng, Xizhong A1 - Rettinger, Robert T1 - Weak computability and representation of real numbers T2 - Mathematical Logic Quarterly Y1 - 2005 UR - https://opus4.kobv.de/opus4-UBICO/frontdoor/index/index/docId/2021 SN - 0942-5616 VL - 50 IS - 4/5 SP - 431 EP - 442 ER -