@Article{Matkowski2009,
author = "Matkowski, Janusz",
title = "Extensions of solutions of a functional equation in two variables",
journal = "Opuscula Math.",
year = "2009",
volume = "29",
number = "4",
pages = "423--425",
doi = "http://dx.doi.org/10.7494/OpMath.2009.29.4.423",
url = "http://dx.doi.org/10.7494/OpMath.2009.29.4.423",
abstract = "An extension theorem for the functional equation of several variables \[f(M(x,y))=N(f(x),f(y)),\] where the given functions \(M\) and \(N\) are left-side autodistributive, is presented.",
keywords = "functional equation, autodistributivity, strict mean, extension theorem",
issn = "1232-9274"
}