References analysis of the Wikipedia article "NGC 7027" in the Czech version

archive.org (Global: 6^th place; Czech: 10^th place)

KALER, James B. The 100 Greatest Stars. New York: Springer-Verlag, 2002. Dostupné online. ISBN 978-0-387-95436-3. S. 133. (anglicky)

KWOK, Sun; SANDFORD, Scott. Organic Matter in Space. Spojené království: Cambridge University Press, 2008. Dostupné online. ISBN 978-0-521-88982-7. S. 170. (anglicky)

arxiv.org (Global: 69^th place; Czech: 196^th place)

GUESTEN, Rolf; WIESEMEYER, Helmut; NEUFELD, David; MENTEN, Karl M., et al. Astrophysical detection of the helium hydride ion HeH⁺. S. 357–359. Nature [online]. Duben 2019 [cit. 2019-08-28]. Roč. 568, čís. 7752, s. 357–359. Dostupné online. arXiv 1904.09581. doi:10.1038/s41586-019-1090-x. Bibcode 2019Natur.568..357G. (anglicky)

CASTNER, Joel H.; VRTILEK, Saeqa D.; SOKER, Noam. Discovery of Extended X-Ray Emission from the Planetary Nebula NGC 7027 by the Chandra X-Ray Observatory. S. L189-L192. Astrophysical Journal [online]. Duben 2001 [cit. 2019-08-29]. Roč. 550, čís. 2, s. L189-L192. Dostupné online. arXiv astro-ph/0102468. doi:10.1086/319651. Bibcode 2001ApJ...550L.189K. (anglicky)

doi.org (Global: 2^nd place; Czech: 4^th place)

BERNARD SALAS, J.; POTTASCH, S. R.; BEINTEMA, D. A.; WESSELIUS, P. R. The ISO-SWS spectrum of planetary nebula NGC 7027. S. 949–958. Astronomy and Astrophysics [online]. Březen 2001 [cit. 2019-08-28]. Roč. 367, s. 949–958. Dostupné online. doi:10.1051/0004-6361:20000435. Bibcode 2001A&A...367..949B. (anglicky)

MASSON, Collin R. The Structure of NGC 7027 and a Determination of Its Distance by Measurement of Proper Motions. S. 294. Astrophysical Journal [online]. Leden 1989 [cit. 2019-08-28]. Roč. 336, s. 294. Dostupné online. doi:10.1086/167011. Bibcode 1989ApJ...336..294M. (anglicky)

CUDWORTH, K. M.; ORAVECZ, M. Astrometry with a small Schmidt telescope: the position of NGC 7027. S. 333–334. Publications of the Astronomical Society of the Pacific [online]. Červen 1978 [cit. 2019-08-29]. Roč. 90, s. 333–334. Dostupné online. doi:10.1086/130337. Bibcode 1978PASP...90..333C. (anglicky)

LIU, X.-W.; BARLOW, M. J.; DALGARNO, A.; TENNYSON, J., et al. An ISO Long Wavelength Spectrometer detection of CH in NGC 7027 and an HeH⁺ upper limit. S. L71-L75. Monthly Notices of the Royal Astronomical Society [online]. Říjen 1997 [cit. 2019-08-29]. Roč. 290, čís. 4, s. L71-L75. Dostupné online. doi:10.1093/mnras/290.4.L71. Bibcode 1997MNRAS.290L..71L. (anglicky)

CHANG, Huan-Cheng. Diamonds in space: a brief history and recent laboratory studies. S. 62004. Journal of Physics: Conference Series [online]. Červenec 2016 [cit. 2019-08-29]. Roč. 728, čís. 6, s. 62004. Dostupné online. doi:10.1088/1742-6596/728/6/062004. Bibcode 2016JPhCS.728f2004C. (anglicky)

harvard.edu (Global: 18^th place; Czech: 99^th place)

ui.adsabs.harvard.edu

adsabs.harvard.edu

NGC 7027 (Czech Wikipedia)

archive.org (Global: 6^th place; Czech: 10^th place)

arxiv.org (Global: 69^th place; Czech: 196^th place)

astro.cz (Global: low place; Czech: 114^th place)

cseligman.com (Global: low place; Czech: low place)

doi.org (Global: 2^nd place; Czech: 4^th place)

harvard.edu (Global: 18^th place; Czech: 99^th place)

ui.adsabs.harvard.edu

adsabs.harvard.edu

hubblesite.org (Global: 6,632^nd place; Czech: 3,440^th place)

seds.org (Global: 5,388^th place; Czech: 1,978^th place)

spider.seds.org

stsci.edu (Global: low place; Czech: low place)

hla.stsci.edu

u-strasbg.fr (Global: 1,342^nd place; Czech: 1,190^th place)

simbad.u-strasbg.fr

web.archive.org (Global: 1^st place; Czech: 1^st place)

wz.cz (Global: low place; Czech: 135^th place)

hvezdnouoblohou.wz.cz

NGC 7027 (Czech Wikipedia)

archive.org (Global: 6th place; Czech: 10th place)

arxiv.org (Global: 69th place; Czech: 196th place)

astro.cz (Global: low place; Czech: 114th place)

cseligman.com (Global: low place; Czech: low place)

doi.org (Global: 2nd place; Czech: 4th place)

harvard.edu (Global: 18th place; Czech: 99th place)

ui.adsabs.harvard.edu

adsabs.harvard.edu

hubblesite.org (Global: 6,632nd place; Czech: 3,440th place)

seds.org (Global: 5,388th place; Czech: 1,978th place)

spider.seds.org

stsci.edu (Global: low place; Czech: low place)

hla.stsci.edu

u-strasbg.fr (Global: 1,342nd place; Czech: 1,190th place)

simbad.u-strasbg.fr

web.archive.org (Global: 1st place; Czech: 1st place)

wz.cz (Global: low place; Czech: 135th place)

hvezdnouoblohou.wz.cz

archive.org (Global: 6^th place; Czech: 10^th place)

arxiv.org (Global: 69^th place; Czech: 196^th place)

astro.cz (Global: low place; Czech: 114^th place)

doi.org (Global: 2^nd place; Czech: 4^th place)

harvard.edu (Global: 18^th place; Czech: 99^th place)

hubblesite.org (Global: 6,632^nd place; Czech: 3,440^th place)

seds.org (Global: 5,388^th place; Czech: 1,978^th place)

u-strasbg.fr (Global: 1,342^nd place; Czech: 1,190^th place)

web.archive.org (Global: 1^st place; Czech: 1^st place)

wz.cz (Global: low place; Czech: 135^th place)