http://www.iab.gr/gr/standards/display-ad-units/
http://www.hotel-advance.com/answers.asp?pid=31&qid=4530
http://www.all4blogs.gr/arthra/banners-ti-einai-kai-pos-na-dimioyrgiseis-ta-dika-soy
http://www.mylefkada.gr/2014/odigos_diafimisis_2014.pdf
http://ti-einai.gr/banners.php
http://www.athinorama.gr/mediakit/timokatalogos/timokatalogos_2012.pdf
http://www.athinorama.gr/mediakit/timokatalogos/timokatalogos_2013.pdf
http://www.vela.gr/3-simvoules-gia-schediasmo-banner-ads/#