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T. W. Berghoefer; D. Breitschwerdt (2002). «The origin of the young stellar population in the solar neighborhood - a link to the formation of the Local Bubble?». Astronomy and Astrophysics390 (1): 299–306. doi:10.1051/0004-6361:20020627. Bibcode: 2002A&A...390..299B.