相关费用：选择性费用︾Authors who request the "Gold Open Access" option at the time of submission and/or acceptance of the manuscript will be asked to pay the charges required, for the activation of this mode, by the web portals used by the SGI for the national and international dissemination of its publishing products.
The fee of the Gold Open Access is € 1000.00. A reduced fee (€ 500.00) would be applied if the corresponding author is an active member of the SGI or has an affiliation with an institution belonging to developing countries (Ministerial Decree no. 1455 of 09/06/2017).