↑ ۲٫۰۲٫۱Smartt, S. J.; Lennon, D. J.; Kudritzki, R. P.; Rosales, F.; Ryans, R. S. I.; Wright, N. (2002). "The evolutionary status of Sher 25 - implications for blue supergiants and the progenitor of SN 1987A". Astronomy and Astrophysics. 391 (3): 979. arXiv:astro-ph/0205242. Bibcode:2002A&A...391..979S. doi:10.1051/0004-6361:20020829.
↑ ۳٫۰۳٫۱۳٫۲Hendry, M. A.; Smartt, S. J.; Skillman, E. D.; Evans, C. J.; Trundle, C.; Lennon, D. J.; Crowther, P. A.; Hunter, I. (2008). "The blue supergiant Sher 25 and its intriguing hourglass nebula". Monthly Notices of the Royal Astronomical Society. 388 (3): 1127. arXiv:0803.4262. Bibcode:2008MNRAS.388.1127H. doi:10.1111/j.1365-2966.2008.13347.x.
ویکیپدیای اسپانیایی
Strategi Solo vs Squad di Free Fire: Cara Menang Mudah!