Other similar students' unions in the country, such as "Associação Académica da Universidade de Aveiro" (University of Aveiro), "Associação Académica da Universidade da Beira Interior" (University of Beira Interior), "Associação Académica da Universidade do Minho" (Minho University), or "Associação Académica da Universidade do Algarve" (University of the Algarve), are smaller students' unions by number of associates because its universities have a smaller number of students or because the universities' student's aren't automatically members of the union, with a membership fee being required.