VILU, Raivo; RANDLA, Tiina. SUSTAINABLE DEVELOPMENT - PROBLEMS OF MEASUREMENT AND POSSIBILITIES OF REALISATION . (CASE STUDY OF NORTH - EASTERN ESTONIA). ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 9–12, 1997. DOI: 10.17770/etr1997vol1.1863. Disponível em: https://journals.rta.lv/index.php/ETR/article/view/1863.. Acesso em: 4 dec. 2024.