PAK, S.-G.; KIM, G.-S.; KO, T.-H.; KIM, R.; SONG, U.-C.; PAK, H.-U. Green’s Function Theory on A Fluctuation of Condensed Particle Number in Bose-Einstein Condensed Systems. International Journal of Progressive Research in Science and Engineering , [S. l.], v. 7, n. 03, p. 1–5, 2026. DOI: 10.65138/ijprse.2026.v7i03.1250. Disponível em: https://journal.ijprse.com/index.php/ijprse/article/view/1250. Acesso em: 21 mar. 2026.