Media type: E-Article Title: The Cosmic Dispersion Measure from Gamma-Ray Burst Afterglows: Probing the Reionization History and the Burst Environment Contributor: Ioka, Kunihito Published: American Astronomical Society, 2003 Published in: The Astrophysical Journal, 598 (2003) 2, Seite L79-L82 Language: English DOI: 10.1086/380598 ISSN: 0004-637X; 1538-4357 Origination: Footnote: Access State: Open Access