GUPTA, Prakash Chanda. First Principle Study of Phonon in BE2C. Shaheed Smriti Journal, [S. l.], v. 10, n. 7, p. 28–32, 2021. DOI: 10.3126/shaheedsmriti.v10i7.76620. Disponível em: https://nepjol.info./index.php/shaheedsmriti/article/view/76620. Acesso em: 27 apr. 2025.