行列の乗法
↑ R.G. Lerner, G.L. Trigg (1991). Encyclopaedia of Physics (2nd ed.). VHC publishers. ISBN 3-527-26954-1
↑ C.B. Parker (1994). McGraw Hill Encyclopaedia of Physics (2nd ed.). ISBN 0-07-051400-3
↑ S. Lipschutz, M. Lipson (2009). Linear Algebra. Schaum's Outlines (4th ed.). McGraw Hill (USA). pp. 30–31. ISBN 978-0-07-154352-1
↑ K.F. Riley, M.P. Hobson, S.J. Bence (2010). Mathematical methods for physics and engineering. Cambridge University Press. ISBN 978-0-521-86153-3