High-income economies
€500
Upper-middle-income economies
€400
Lower-middle-income economies
€300
Low-income economies
€200
| Andorra Antigua and Barbuda Aruba Australia Austria Bahamas, The Bahrain Barbados Belgium Bermuda Brunei Darussalam Canada Cayman Islands Channel Islands Cyprus Czech Republic Denmark Estonia Equatorial Guinea Faeroe Islands Finland France | French Polynesia Germany Greece Greenland Guam Hong Kong, China Hungary Iceland Ireland Isle of Man Palestine Italy Japan Korea, Rep. Kuwait Liechtenstein Luxembourg Macao, China Malta Monaco Netherlands Netherlands Antilles | New Caledonia New Zealand Northern Mariana Islands Norway Oman Portugal Puerto Rico Qatar San Marino Saudi Arabia Singapore Slovak Republic Slovenia Spain Sweden Switzerland Trinidad and Tobago United Arab Emirates United Kingdom United States Virgin Islands (U.S.) |
| American Samoa Argentina Belarus Belize Botswana Brazil Bulgaria Chile Costa Rica Cuba Dominica Fiji Gabon | Grenada Jamaica Kazakhstan Latvia Lebanon Libya Lithuania Malaysia Mauritius Mayotte Mexico Palau Panama | Poland Romania Russian Federation Seychelles South Africa St. Kitts and Nevis St. Lucia St. Vincent and the Grenadines Suriname Turkey Uruguay Venezuela, RB |
| Albania Algeria Angola Armenia Azerbaijan Bhutan Bolivia Cameroon Cape Verde China CColombia Congo, Rep. Djibouti Dominican Republic Ecuador Egypt, Arab Rep El Salvador | Georgia Guatemala Guyana Honduras India Indonesia Iran, Islamic Rep. Iraq Jordan Kiribati Lesotho Maldives Marshall Islands Micronesia, Fed. Sts. Moldova Mongolia Morocco | Namibia Nicaragua Paraguay Peru Philippines Samoa Sri Lanka Sudan Swaziland Syrian Arab Republic Thailand Timor-Leste Tonga Tunisia Turkmenistan Ukraine Vanuatu West Bank and Gaza |
| Afghanistan Bangladesh Benin Burkina Faso Burundi Cambodia Central African Republic Chad Comoros Congo, Dem. Rep Côte d'Ivoire Eritrea Ethiopia Gambia, The Ghana Guinea Guinea-Bissau | Haiti Kenya Korea, Dem Rep. Kyrgyz Republic Lao PDR Solomon Liberia Madagascar Malawi Mali Mauritania Mozambique Myanmar Nepal Niger Nigeria Pakistan Papua New Guinea | Rwanda São Tomé and Principe Senegal Sierra Leone Islands Somalia Tajikistan Tanzania Togo Uganda Uzbekistan Vietnam Yemen, Rep. Zambia Zimbabwe |
Notice: For authors from Serbia, Bosnia and Herzegovina, Croatia, Montenegro, Kosovo, and Macedonia, the publication fee (supp) is equal to 500 EURO.
Important Note: The above publication fee (supp) is for the papers with up to ONLY 4 authors. In case the paper has more than 4 authors, an extra 100 Euro will be charged per extra author, regardless of his/her country. It should be noted that the First Author is responsible for paying the total publication fee (supp).