(en) Robert A. Fesen, Kathryn E. Weil, Ignacio A. Cisneros, William P. Blair et John C. Raymond, « The Cygnus Loop's distance, properties, and environment driven morphology », Monthly Notices of the Royal Astronomical Society, vol. 481, no 2, , p. 1786–1798 (DOI10.1093/mnras/sty2370, Bibcode2018MNRAS.481.1786F, arXiv1809.01713, S2CID119000958)
books.google.com
Mark Bratton, The Complete Guide to the Herschel Objects, Cambridge University Press, (ISBN9781107376854, lire en ligne)
(en) Tom Trusock, « §"The Veil" », sur Cloudy Nights Telescope Reviews
doi.org
dx.doi.org
(en) Robert A. Fesen, Kathryn E. Weil, Ignacio A. Cisneros, William P. Blair et John C. Raymond, « The Cygnus Loop's distance, properties, and environment driven morphology », Monthly Notices of the Royal Astronomical Society, vol. 481, no 2, , p. 1786–1798 (DOI10.1093/mnras/sty2370, Bibcode2018MNRAS.481.1786F, arXiv1809.01713, S2CID119000958)
harvard.edu
ui.adsabs.harvard.edu
(en) Robert A. Fesen, Kathryn E. Weil, Ignacio A. Cisneros, William P. Blair et John C. Raymond, « The Cygnus Loop's distance, properties, and environment driven morphology », Monthly Notices of the Royal Astronomical Society, vol. 481, no 2, , p. 1786–1798 (DOI10.1093/mnras/sty2370, Bibcode2018MNRAS.481.1786F, arXiv1809.01713, S2CID119000958)
(en) Robert A. Fesen, Kathryn E. Weil, Ignacio A. Cisneros, William P. Blair et John C. Raymond, « The Cygnus Loop's distance, properties, and environment driven morphology », Monthly Notices of the Royal Astronomical Society, vol. 481, no 2, , p. 1786–1798 (DOI10.1093/mnras/sty2370, Bibcode2018MNRAS.481.1786F, arXiv1809.01713, S2CID119000958)