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. 4, p. 137–152, 2019. Disponível em: https://www.ijesh.com/j/article/view/671. Acesso em: 29 mar. 2026.