Sign function (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Sign function" in English language version.

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archive.today

Yu.M.Shirokov (1979). "Algebra of one-dimensional generalized functions". Theoretical and Mathematical Physics. 39 (3): 471–477. Bibcode:1979TMP....39..471S. doi:10.1007/BF01017992. Archived from the original on 2012-12-08.

doi.org

Burrows, B. L.; Colwell, D. J. (1990). "The Fourier transform of the unit step function". International Journal of Mathematical Education in Science and Technology. 21 (4): 629–635. doi:10.1080/0020739900210418.
Yu.M.Shirokov (1979). "Algebra of one-dimensional generalized functions". Theoretical and Mathematical Physics. 39 (3): 471–477. Bibcode:1979TMP....39..471S. doi:10.1007/BF01017992. Archived from the original on 2012-12-08.

harvard.edu

ui.adsabs.harvard.edu

Yu.M.Shirokov (1979). "Algebra of one-dimensional generalized functions". Theoretical and Mathematical Physics. 39 (3): 471–477. Bibcode:1979TMP....39..471S. doi:10.1007/BF01017992. Archived from the original on 2012-12-08.

maeckes.nl

"Signum function - Maeckes". www.maeckes.nl.

metapress.com

springerlink.metapress.com

Yu.M.Shirokov (1979). "Algebra of one-dimensional generalized functions". Theoretical and Mathematical Physics. 39 (3): 471–477. Bibcode:1979TMP....39..471S. doi:10.1007/BF01017992. Archived from the original on 2012-12-08.

wolfram.com

mathworld.wolfram.com