@article{Janiak:2009,
author
=
"T.Janiak and E.Łuczak-Kumorek and M.Kisielewicz",
title
=
"Existence theorem for functional-differential relations",
journal
=
"Demonstratio Mathematica",
volume
=
"Vol. 12",
number
=
"no 2",
pages
=
"411--420",
year
=
"1979",
}