Quang, Nguyen T.; Tuyen, Doan T.; Thuy, Nguyen T. T. Co-prolongations of a group extension. (English) Zbl 1337.20058 Int. J. Group Theory 3, No. 1, 57-64 (2014). MSC: 20J05 20J06 20E22 PDFBibTeX XMLCite \textit{N. T. Quang} et al., Int. J. Group Theory 3, No. 1, 57--64 (2014; Zbl 1337.20058) Full Text: arXiv
Quang, Nguyen T.; Phung, Che T. K.; Cuc, Pham T. The prolongation of central extensions. (English) Zbl 1284.20059 Int. J. Group Theory 1, No. 2, 39-49 (2012). MSC: 20J05 20J06 20E22 PDFBibTeX XMLCite \textit{N. T. Quang} et al., Int. J. Group Theory 1, No. 2, 39--49 (2012; Zbl 1284.20059) Full Text: arXiv