Roland J. Egger, Bernd Aschenbach (February 1995). «Interaction of the Loop I supershell with the Local Hot Bubble». Astronomy and Astrophysics294 (2): L25-L28. Bibcode:1995A&A...294L..25E. arXiv:astro-ph/9412086.
Roland J. Egger, Bernd Aschenbach (February 1995). «Interaction of the Loop I supershell with the Local Hot Bubble». Astronomy and Astrophysics294 (2): L25-L28. Bibcode:1995A&A...294L..25E. arXiv:astro-ph/9412086.