[5] Herzog, M., Longobardi, P., Maj, M.:
On the number of commutators in groups. Ischia Group Theory 2004 Z. Arad et al. Contemporary Mathematics 402, American Mathematical Society, Providence (2006), 181-192.
DOI 10.1090/conm/402 |
MR 2258662 |
Zbl 1122.20017
[10] Shi, W.: On simple $K_4$-groups. Chin. Sci. Bull. 36 (1991), 1281-1283.