https://www.esos.gr/sites/default/files/articles-legacy/syntelestes_elahistis_vasis_eisagogis_e.v.e._sholon_tmimaton_i_eisagogikon_kateythynseon_kathos_kai_syntelestes_elahistis_0.pdf?fbclid=IwAR1zuq2JDdM1moi-A08_5Tpx2oEFFrf3VtB38tJB765Hw0Q2ysnPZB1Z-0Q