@article{Karczewska:2015,
author
=
"A.Karczewska and P.Rozmej and Ł.Rutkowski",
title
=
"Problems with energy of waves described by Korteweg - de Vries equation",
journal
=
"ANNALES UMCS - Sectio AAA - PHYSICA",
volume
=
"Vol. 70",
pages
=
"41--54",
year
=
"2015",
}