NGUYEN THI THAO; MAI THUY DUNG; PHAM VU LOC; NGUYEN THI KIM HA; PHAM NGOC DIEP; PIERRE DARRIULAT. The 50 cm telescope of Hoa Lac observatory: an introduction. Vietnam Journal of Science, Technology and Engineering, [S. l.], v. 61, n. 4, p. 14-28, 2019. DOI: 10.31276/VJSTE.61(4).14-28. Disponivel em: https://vietnamscience.vjst.vn/index.php/vjste/article/view/150. Acesso em: 16 jul. 2026.