@article{Matkowski:2010,
author
=
"J.Matkowski",
title
=
"Generalizations of Lagrange and Cauchy mean-value theorems",
journal
=
"Demonstratio Mathematica",
volume
=
"Vol. 43",
number
=
"no 4",
pages
=
"765--774",
year
=
"2010",
}