Paral·lel 81° nord (Catalan Wikipedia)

Analysis of information sources in references of the Wikipedia article "Paral·lel 81° nord" in Catalan language version.

refsWebsite

Global rank Catalan rank

1webcitation.org

24^th place

78^th place

2,028^th place

3,294^th place

212^th place

230^th place

1movable-type.co.uk

low place

2,420^th place

1web.archive.org

1^st place

1^st place

237^th place

355^th place

movable-type.co.uk

«Vincenty formula for distance between two Latitude/Longitude points».

navy.mil

aa.usno.navy.mil

«Duration of Daylight/Darkness Table for One Year». Astronomical Applications Department of the U.S. Naval Observatory. Arxivat de l'original el 2019-10-12. [Consulta: 14 agost 2018].

nga.mil

msi.nga.mil

«Length of a Degree of Latitud'And Longitude». National Geospatial-Intelligence Agency. Arxivat de l'original el 2013-01-28. [Consulta: 14 agost 2018].

noaa.gov

ngs.noaa.gov

T. Vincenty «Direct and Inverse Solutions of Geodesics on the Ellipsoid with application of nested equation». Survey Review, 4-1975.

web.archive.org

«Duration of Daylight/Darkness Table for One Year». Astronomical Applications Department of the U.S. Naval Observatory. Arxivat de l'original el 2019-10-12. [Consulta: 14 agost 2018].

webcitation.org

«Length of a Degree of Latitud'And Longitude». National Geospatial-Intelligence Agency. Arxivat de l'original el 2013-01-28. [Consulta: 14 agost 2018].