https://popek.gr/2015/02/systasi-sygkrotisi-kai-orismos-melon-omadas-ergasias-sto-ypourgeio-oikonomikon-gia-ti-meleti-kai-katagrafi-ton-leitourgikon-apaitiseon-tou-ergou-egkatastasi-olokliromenou-systimatos-elegxou-eisroon-ek/