∂ (Portuguese Wikipedia)

Analysis of information sources in references of the Wikipedia article "∂" in Portuguese language version.

refsWebsite

Global rank Portuguese rank

3books.google.com

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6^th place

549^th place

325^th place

books.google.com

Bhardwaj, R.S. (2005), Mathematics for Economics & Business 2nd ed. , p. 6.4
Pemberton, Malcolm; Rau, Nicholas (2011), Mathematics for Economists: An Introductory Textbook, p. 271
Silverman, Richard A. (1989), Essential Calculus: With Applications, p. 216

tripod.com

jeff560.tripod.com

Aldrich, John. «Earliest Uses of Symbols of Calculus». Consultado em 16 de janeiro de 2014