A. Bella and V. Malykhin, On certain subsets of a group, Questions Answers Gen. Topology 17, no. 2 (1999), 183–197.
A. Bella, V. Malykhin, On certain subsets of a group. II, Questions Answers Gen. Topology 19, no. 1 (2001), 81–94.
Dikranjan, D., Marconi, U., & Moresco, R. (2003). Groups with a small set of generators. Applied General Topology, 4(2), 327. doi:10.4995/agt.2003.2037
[+]
A. Bella and V. Malykhin, On certain subsets of a group, Questions Answers Gen. Topology 17, no. 2 (1999), 183–197.
A. Bella, V. Malykhin, On certain subsets of a group. II, Questions Answers Gen. Topology 19, no. 1 (2001), 81–94.
Dikranjan, D., Marconi, U., & Moresco, R. (2003). Groups with a small set of generators. Applied General Topology, 4(2), 327. doi:10.4995/agt.2003.2037
Dikranjan, D., & Protasov, I. V. (2006). Every infinite group can be generated by P-small subset. Applied General Topology, 7(2), 265. doi:10.4995/agt.2006.1929
I. I. Guran, Topological groups similar to Lindel¨of groups, Dokl. Akad. Nauk SSSR 256, no. 6 (1981), 1305–1307.
I. I. Guran. The Cardinal Invariant of Paratopological Groups, Proc. of II Intern. Algebraical Conf. in Ukraine, Dedicated to the Memory of L.A. Kaluzhnin. – Kyiv-Vinnitsya, 1999. - P.72. (in Ukrainian)
Tkačenko, M. (1998). Introduction to topological groups. Topology and its Applications, 86(3), 179-231. doi:10.1016/s0166-8641(98)00051-0
[-]