Pengarang: Sándor Jenei and Franco Montagna
| No. Panggil: Journal of Logic and Computation June 2013, 23 (3), p. 707-726
| Penerbitan: Oxford University Press
Pengarang: Thomas Zerjatke and Monika Sturm
| No. Panggil: Journal of Logic and Computation August 2013, 23 (4), p. 897-908
| Penerbitan: Oxford University Press
Pengarang: Daniele Marsibilio and Andrea Sorbi
| No. Panggil: Journal of Logic and Computation December 2013; 23 (6), p. 1267-1292
| Penerbitan: Oxford University Press
Pengarang: Pavel Naumov and Italo Simonelli
| No. Panggil: Journal of Logic and Computation August 2014; 24 (4), p. 851-861)
| Penerbitan: Oxford University Press
Pengarang: Laurens G. Wilming, Elizabeth A. Hart, Penny C. Coggill, Roger Horton, dll
| No. Panggil: Database (Volume 2013, p.bat011)
| Penerbitan: Oxford University Press