An ordinal analysis of parameter free ?<sup>1</sup><sub>2</sub>-comprehension.Published in:Archive for Mathematical Logic, 2005, v. 44, n. 3, p. 263, doi. 10.1007/s00153-004-0232-4By:Rathjen, MichaelPublication type:Article
Models of set theory with definable ordinals.Published in:Archive for Mathematical Logic, 2005, v. 44, n. 3, p. 363, doi. 10.1007/s00153-004-0256-9By:Enayat, AliPublication type:Article
Diamond, square, and level by level equivalence.Published in:Archive for Mathematical Logic, 2005, v. 44, n. 3, p. 387, doi. 10.1007/s00153-004-0252-0By:Apter, Arthur W.Publication type:Article