Article 3 Jurisdiction of Tribunal and crimes
2) The following acts or any of them are crimes within the jurisdiction of a Tribunal for which there shall be individual responsibility, namely:
(c) Genocide: meaning and including any of the following acts committed with intent to destroy, in whole or in part, a national, ethnic, racial, religious or political group, such as
(v) forcibly transferring children of the group to another group ;
Forcibly transferring children of the group to another group
EDIT.