Khmelnitskii, N. A. (2014) “Cockcroft–Swan Theorem for Projective Crossed Chain Complexes”, Ukrains’kyi Matematychnyi Zhurnal, 66(12), pp. 1694-1704. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/2255 (Accessed: 19April2024).