NIKITIN, Oleg; VÄLI, Erik; SABANOV, Sergei; PASTARUS, Jyri-Rivaldo. THE SURFACE MINER SUSTAINABLE TECHNOLOGY INTRODUCTION FOR OIL-SHALE MINING IN ESTONIA. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 55–61, 2007. DOI: 10.17770/etr2007vol1.1735. Disponível em: https://journals.ru.lv/index.php/ETR/article/view/1735.. Acesso em: 17 jun. 2024.