● Моя огромная благодарность профессору Тиму Пеннингсу за то, что он уделил свое время (а также поделился газетными вырезками) – таким образом появилась эта глава. Рассказать историю Элвиса – большая честь для меня и моя почетная обязанность.

● Bolt, Michael, and Daniel C. Isaksen. “Dogs Don’t Need Calculus.” College Mathematics Journal 41, no. 10 (January 2010): 10–16. https://www.maa.org/sites/default/files/Bolt2010.pdf.

● “CNN Student News Transcript: September 26, 2008.” http://www.cnn.com/2008/LIVING/studentnews/09/25/transcript.fri/index.html.

● Dickey, Leonid. “Do Dogs Know Calculus of Variations?” College Mathematics Journal 37, no. 1 (January 2006): 20–23. https://www.maa.org/sites/default/files/Dickey-CMJ-2006.pdf.

● “Do Dogs Know Calculus? The Corgi Might.” National Purebred Dog Day, March 15, 2016. https://nationalpurebreddogday.com/dogs-know-calculus-corgi-knows/.

● Minton, Roland, and Timothy J. Pennings. “Do Dogs Know Bifurcations?” College Mathematics Journal 38, no. 5 (November 2007): 356–61. https://www.maa.org/sites/default/iles/pdf/upload_library/22/Polya/minton356.pdf.

● Pennings, Timothy J. “Do Dogs Know Calculus?” College Mathematics Journal 34, no. 3 (May 2003): 178–82. https://www.jstor.org/stable/3595798.

● Perruchet, Pierre, and Jorge Gallego, “Do Dogs Know Related Rates Rather Than Optimization?” College Mathematics Journal 37, no. 1 (January 2006): 16–18. https://www.maa.org/sites/default/files/pdf/mathdl/CMJ/cmj37-1-016-018.pdf.

● Thurber, James. Thurber’s Dogs: A Collection of the Master’s Dogs, Written and Drawn, Real and Imaginary, Living and Long Ago. New York: Simon & Schuster, 1955.