Comment of the Labor Code of the Russian Federation as of April 1, 2009 - 5 th ed. Ispra., Ext. and pererab. / Kommentariy k Trudovomu kodexu Rossiyskoy Federatsii po sostoyaniyu na 1 aprelya 2009 goda - 5-e izd.,ispr., dop. i pererab.