FushchichV. I., LagnoV. I. and ZhdanovR. Z. (1995) “Reduction of the self-dual Yang-Mills equations I. Poincaré group”, Ukrains’kyi Matematychnyi Zhurnal, 47(4), pp. 456–462. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5442 (Accessed: 27July2024).