Pengarang: Branislav Rovan and L'ubo Steskal
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 175-176
| Penerbitan: Oxford University Press
Pengarang: Margarita Korovina and Oleg Kudinov
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 159-174
| Penerbitan: Oxford University Press
Pengarang: A. Cordón-Franco, A. Fernández-Margarit, and F. F. Lara-Martín
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 123-143
| Penerbitan: Oxford University Press
Pengarang: Yijia Chen and Jörg Flum
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 89-122
| Penerbitan: Oxford University Press
Pengarang: Douglas Cenzer, Geoffrey Laforte, and Guohua Wu
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 77-87
| Penerbitan: Oxford University Press
Pengarang: Vasco Brattka and Guido Gherardi
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 45-76
| Penerbitan: Oxford University Press
Pengarang: Andrej Bauer and Christopher A. Stone
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 17-43
| Penerbitan: Oxford University Press
Pengarang: George Barmpalias, Douglas Cenzer, Jeffrey B. Remmel, and Rebecca Weber
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 3-16
| Penerbitan: Oxford University Press