Roland J. Egger, Bernd Aschenbach (February 1995). "Interaction of the Loop I supershell with the Local Hot Bubble". Astronomy and Astrophysics. 294 (2): L25-L28. arXiv:astro-ph/9412086. Bibcode:1995A&A...294L..25E.
Roland J. Egger, Bernd Aschenbach (February 1995). "Interaction of the Loop I supershell with the Local Hot Bubble". Astronomy and Astrophysics. 294 (2): L25-L28. arXiv:astro-ph/9412086. Bibcode:1995A&A...294L..25E.