非可換整域
↑ Weisstein, Eric W. "Domain". mathworld.wolfram.com (英語).
↑ Polcino M. & Sehgal 2002, p. 65.
↑ Lanski 2005, p. 343, Definition 10.18.
↑ Jacobson 2009, p. 90, Section 2.2—"Note that if 1=0, then a=1a=0a=0 showing that all elements are 0."
↑ Rowen 1994, p. 99.
↑ Lanski 2005, p. 343.