Hefferon, Jim. Linear Algebra (4th ed.). pp. 270–272. This article incorporates text from this source, which is available under the CC BY-SA 3.0 license.
Hefferon, Jim. Linear Algebra (4th ed.). p. 405. This article incorporates text from this source, which is available under the CC BY-SA 3.0 license.
hefferon.net
Hefferon, Jim. Linear Algebra (4th ed.). pp. 270–272. This article incorporates text from this source, which is available under the CC BY-SA 3.0 license.
Hefferon, Jim. Linear Algebra (4th ed.). p. 405. This article incorporates text from this source, which is available under the CC BY-SA 3.0 license.