Joined Cases C-78/02, C-79/02 and C-80/02
Elliniko Dimosio
v
Maria Karageorgou
Katina Petrova
Loukas Vlachos
(Reference for a preliminary ruling from the Diikitiko Efetio Athinon (Greece))
((Tax paid in error by a non-taxable person and mentioned on the invoice issued by such a service provider))