Cause riunite C-78/02, C-79/02 e C-80/02 Elliniko Dimosio e Maria Karageorgou, Katina Petrova, Loukas Vlachos Fiscalità ###>Joined Cases C-78/02, C-79/02 and C-80/02 Elliniko Dimosio ν Maria Karageorgou, Katina Petrova, Loukas Vlachos Taxation