Erratum to: Astrophys Space Sci (2006) 302(1–4):61–65

Energy-momentum of a stationary beam of light in teleparallel gravity
Oktay Aydogdu · Mustafa Salti
DOI 10.1007/s10509-005-9005-8

After investigation and at the request of the President of the Middle East Technical University (METU), Ankara, Turkey, the Editors of Astrophysics and Space Science have decided to retract this paper due to extensive plagiarism of work by others.© Springer Science+Business Media B.V. 2008

Erratum to: Astrophys Space Sci (2005) 299(2):159–166

Energy-momentum in the viscous Kasner-type universe in teleparallel gravity
Mustafa Salti
DOI 10.1007/s10509-005-5159-7

After investigation and at the request of the President of the Middle East Technical University (METU), Ankara, Turkey, the Editors of Astrophysics and Space Science have decided to retract this paper due to extensive plagiarism of work by others.© Springer Science+Business Media B.V. 2008

Erratum to: Astrophys Space Sci (2006) 301(1–4):43–46

The momentum 4-vector imparted by gravitational waves in Bianchi-type metrics
Ali Havare · Murat Korunur · Mustafa Salti
DOI 10.1007/s10509-006-6303-8

After investigation and at the request of the President of the Middle East Technical University (METU), Ankara, Turkey, the Editors of Astrophysics and Space Science have decided to retract this paper due to extensive plagiarism of work by others.© Springer Science+Business Media B.V. 2008

Erratum to: Astrophys Space Sci (2005) 299(3):227–232

Energy of the universe in Bianchi-type I models in Møller’s tetrad theory of gravity
Oktay Aydogdu . Mustafa Salti
DOI 10.1007/s10509-005-7216-7

After investigation and at the request of the President of the Middle East Technical University (METU), Ankara, Turkey, the Editors of Astrophysics and Space Science have decided to retract this paper due to extensive plagiarism of work by others. © Springer Science+Business Media B.V. 2008