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[[United States]]
|| From 1934 to 1937, [[NEC]] engineer [[Akira Nakashima]], [[Claude Shannon]] and [[Victor Shestakov|Viktor Shestakov]] published a series of papers introducing [[switching circuit theory]].<ref>[https://www.jstage.jst.go.jp/article/ieejfms/124/8/124_8_720/_article History of Research on Switching Theory in Japan], ''IEEJ Transactions on Fundamentals and Materials'', vol. 124 (2004) no. 8, pp. 720–726, [[Institute of Electrical Engineers of Japan]]</ref><ref>[http://museum.ipsj.or.jp/en/computer/dawn/0002.html Switching Theory/Relay Circuit Network Theory/Theory of Logical Mathematics], IPSJ Computer Museum, [[Information Processing Society of Japan]]</ref><ref name="historical">Radomir S. Stanković ([[University of Niš]]), Jaakko T. Astola ([[Tampere University of Technology]]), Mark G. Karpovsky ([[Boston University]]), [http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.66.1248 Some Historical Remarks on Switching Theory], 2007, DOI 10.1.1.66.1248</ref><ref name="
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