GAILE, Liga. Analysis of Dynamic Parameters of Observation Towers in Latvia. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 2, p. 57–62, 2015. DOI: 10.17770/etr2013vol2.847. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/847.. Acesso em: 20 jun. 2024.