@article {Machado2016, title = {Transfer investment on education on a free cost basis: Some evidence from Portugal, Spain, Greece and Italy}, journal = {Ensaio}, volume = {24}, number = {93}, year = {2016}, pages = {777-799}, author = {L. Cerdeira and B. G. Cabrito and M. L. Machado-Taylor and Tom{\'a}s Patroc{\'\i}nio} }