YU, Ang-Yang. About Efficiency of High-order Harmonic Generation in Attosecond Physics. International Journal of Clinical Virology, [S. l.], v. 8, n. 2, p. 045–047, 2024. DOI: 10.29328/journal.ijcv.1001061. Disponível em: https://www.clinvirologyjournal.com/index.php/ijcv/article/view/ijcv-aid1061. Acesso em: 3 dec. 2025.