RAVI NATH CHOUDHRY, DR. NARENDRA KUMAR. Collective Excitations and Critical Phenomena in Interacting Bose–Einstein Condensates. International Journal of Engineering Science & Humanities, [S. l.], v. 9, n. 3, p. 67–81, 2019. Disponível em: https://www.ijesh.com/j/article/view/699. Acesso em: 1 apr. 2026.