^Kanemitsu, Shigeru; Jia, Chaohua (2002). Number Theoretic Methods: future trends. Springer. pp. 271–274.
ISBN978-1-4020-1080-4.
^Gowers, Timothy; Barrow-Green, June; Leader, Imre (2008). The Princeton Companion to Mathematics. Princeton University Press. pp. 764–765.
ISBN978-0-691-11880-2.
^
abCrilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus.
ISBN978-1-84724-008-8.
^Stokstad, Marilyn; Cateforis, David; Addiss, Stephen (2005). Art History (2nd ed.). Upper Saddle River, New Jersey: Pearson Education. pp. 964–967.
ISBN0-13-145527-3.
^Kanemitsu, Shigeru; Jia, Chaohua (2002). Number Theoretic Methods: future trends. Springer. pp. 271–274.
ISBN978-1-4020-1080-4.
^Gowers, Timothy; Barrow-Green, June; Leader, Imre (2008). The Princeton Companion to Mathematics. Princeton University Press. pp. 764–765.
ISBN978-0-691-11880-2.
^
abCrilly, Tony (2007). 50 Mathematical Ideas you really need to know. London: Quercus.
ISBN978-1-84724-008-8.
^Stokstad, Marilyn; Cateforis, David; Addiss, Stephen (2005). Art History (2nd ed.). Upper Saddle River, New Jersey: Pearson Education. pp. 964–967.
ISBN0-13-145527-3.