(EN) E.Lagadec, A. A. Zijlstra, R. D. Oudmaijer, T. Verhoelst, N. L. J. Cox, R. Szczerba, D. Meékarnia, H. van Winckel, A double detached shell around a post-red supergiant: IRAS 17163-3907, the Fried Egg nebula (abstract), in Astronomy & Astrophysics, vol. 534, L10, 27, DOI:10.1051/0004-6361/201117521. URL consultato il 27 agosto 2012.
(EN) E.Lagadec, A. A. Zijlstra, R. D. Oudmaijer, T. Verhoelst, N. L. J. Cox, R. Szczerba, D. Meékarnia, H. van Winckel, A double detached shell around a post-red supergiant: IRAS 17163-3907, the Fried Egg nebula (abstract), in Astronomy & Astrophysics, vol. 534, L10, 27, DOI:10.1051/0004-6361/201117521. URL consultato il 27 agosto 2012.
[1], "It is amazing that one of the brightest stars in the infrared sky had previously gone unnoticed. We are seeing a very rare event, when a star is beginning to blow off its outer layers, as a prelude to its final explosion as a supernova".