Computability theory SB Cooper CRC Press, 2003 | 454 | 2003 |

Enumeration reducibility, nondeterministic computations and relative computability of partial functions SB Cooper Recursion theory week, 57-110, 1990 | 127 | 1990 |

The dre degrees are not dense SB Cooper, L Harrington, AH Lachlan, S Lempp, RI Soare Annals of Pure and Applied Logic 55 (2), 125-151, 1991 | 107 | 1991 |

Alan Turing: His work and impact SB Cooper, J Van Leeuwen Elsevier, 2013 | 106 | 2013 |

Partial degrees and the density problem. part 2: The enumeration degrees of the∑ 2 sets are dense SB Cooper The Journal of symbolic logic 49 (2), 503-513, 1984 | 104 | 1984 |

Minimal degrees and the jump operator SB Cooper The Journal of Symbolic Logic 38 (2), 249-271, 1973 | 85 | 1973 |

On minimal pairs of enumeration degrees K McEvoy, SB Cooper The Journal of symbolic logic 50 (4), 983-1001, 1985 | 81 | 1985 |

Degrees of unsolvability SB Cooper University of Leicester, 1971 | 80 | 1971 |

Minimal pairs and high recursively enumerable degrees SB Cooper The Journal of Symbolic Logic 39 (4), 655-660, 1974 | 76 | 1974 |

Weak density and cupping in the dr. e. degrees SB Cooper, S Lempp, P Watson Israel Journal of Mathematics 67 (2), 137-152, 1989 | 68 | 1989 |

Incomputability in nature SB Cooper, P Odifreddi Computability and models, 137-160, 2003 | 63 | 2003 |

Partial degrees and the density problem SB Cooper The Journal of Symbolic Logic 47 (4), 854-859, 1982 | 62 | 1982 |

Completeness of S4 with respect to the real line: revisited G Bezhanishvili, M Gehrke Annals of Pure and Applied Logic 131 (1-3), 287-301, 2005 | 60 | 2005 |

New computational paradigms: Changing conceptions of what is computable SB Cooper, B Löwe, A Sorbi Springer Science & Business Media, 2007 | 50 | 2007 |

Isolated dre degrees SB Cooper, X Yi preprint series 17, 1995 | 43 | 1995 |

Properly Σ_{2} Enumeration DegreesSB Cooper, CS Copestake Mathematical Logic Quarterly 34 (6), 491-522, 1988 | 41 | 1988 |

Turing's titanic machine? SB Cooper Communications of the ACM 55 (3), 74-83, 2012 | 40 | 2012 |

Cupping and noncupping in the enumeration degrees of∑ 20 sets SB Cooper, A Sorbi, X Yi Annals of Pure and Applied Logic 82 (3), 317-342, 1996 | 35 | 1996 |

A splitting theorem for the 𝑛-re degrees SB Cooper Proceedings of the American Mathematical Society 115 (2), 461-471, 1992 | 35 | 1992 |

The density of the low 2 n-r. e. degrees SB Cooper Archive for Mathematical Logic 31 (1), 19-24, 1991 | 34 | 1991 |