共 12 条
- [1] [Anonymous], 1904, Rendiconti del Circolo Matematico di Palermo (1884-1940)
- [3] Concerning the topology of three dimensional space [J]. MATHEMATISCHE ANNALEN, 1910, 69 : 137 - 168
- [4] DEHN M, 1907, JAHRESBER DTSCH MATH, V16, P573
- [5] EDMONDS A, 1996, ENSEIGN MATH, V42, P311
- [7] JOHNSON DL, 1997, PRESENTATIONS GROUPS, P80