Covariance and contravariance of vectors (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Covariance and contravariance of vectors" in English language version.

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2books.google.com

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books.google.com (Global: 3^rd place; English: 3^rd place)

Sylvester, J.J. (1851). "On the general theory of associated algebraical forms". Cambridge and Dublin Mathematical Journal. Vol. 6. pp. 289–293.
Bowen, Ray; Wang, C.-C. (2008) [1976]. "§3.14 Reciprocal Basis and Change of Basis". Introduction to Vectors and Tensors. Dover. pp. 78, 79, 81. ISBN 9780486469140.

worldcat.org (Global: 5^th place; English: 5^th place)

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Frankel, Theodore (2012). The geometry of physics : an introduction. Cambridge: Cambridge University Press. p. 42. ISBN 978-1-107-60260-1. OCLC 739094283.
Sylvester, J.J. University Press (16 February 2012). The collected mathematical papers of James Joseph Sylvester. Vol. 3, 1870–1883. Cambridge University Press. ISBN 978-1107661431. OCLC 758983870.