§ 11-a. Recovering possession of reservation land. In addition to any other remedy provided by this chapter or by any other law, the council, chiefs, trustees or headmen constituting the governing body of any nation, tribe or band of Indians may in the name and on behalf of such nation, tribe or band, maintain any action or proceeding to recover the possession of lands of such nation, tribe or band unlawfully occupied by others and for damages resulting from such occupation.