MalyutaY. M. and ObikhodT. V. (2002) “BPS-States in F-Theory”, Ukrains’kyi Matematychnyi Zhurnal, 54(9), pp. 1284-1288. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4167 (Accessed: 22November2024).