Sobolev , V.I. and Shcherbin , V.M. (1992) “Integration of mappings of half-ordered rings ”, Ukrains’kyi Matematychnyi Zhurnal, 44(4), pp. 547–555. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/7897 (Accessed: 6 December 2025).