Pengarang: Mladen Pavičić and Norman D. Megill
| No. Panggil: Journal of Logic and Computation December 2008, 18 (6), p. 959-982
| Penerbitan: Oxford University Press
Pengarang: Mauricio Osorio Galindo, José R. Arrazola Ramírez, and José Luis Carballido
| No. Panggil: Journal of Logic and Computation December 2008, 18 (6), p. 913-940
| Penerbitan: Oxford University Press
Pengarang: Luís Cruz-Filipe, João Rasga, Amílcar Sernadas, and Cristina Sernadas
| No. Panggil: Journal of Logic and Computation December 2008, 18 (6), p. 885-911
| Penerbitan: Oxford University Press
Pengarang: Carlo Meghini and Nicolas Spyratos
| No. Panggil: Journal of Logic and Computation December 2008, 18 (6), p. 831-847
| Penerbitan: Oxford University Press
Pengarang: Evgeny Yu. Sherkhonov
| No. Panggil: Journal of Logic and Computation December 2008, 18 (6), p. 815-829
| Penerbitan: Oxford University Press
Pengarang: Alexandra A. Soskova and Ivan N. Soskov
| No. Panggil: Journal of Logic and Computation February 2009, 19 (1), p. 199-215
| Penerbitan: Oxford University Press