Хиперболична функция (Bulgarian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Хиперболична функция" in Bulgarian language version.

refsWebsite

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1books.google.com

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books.google.com

N.P., Bali. Golden Integral Calculus. Firewall Media, 2005. ISBN 81-7008-169-6. с. 472.

wolfram.com

mathworld.wolfram.com

Eric W. Weisstein. Hyperbolic Tangent // MathWorld. Посетен на 20 октомври 2008.