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2. (2) Tim Tiek, Paulus Thomas Johannes Gennissen, Arrangement for linearizing a non-linear sensor, EP 2 128 579 B1, 2009-12-02
3. (3) “Application Technics of High luminous / Power LED”, CQ Publishing Co. Ltd., pp. 35-38 (2012) (in Japanese)
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5. (5) S. Monk : “Raspberry Pi CookBook”, Orelly Japan Inc. (2011) (in Japanese)