[1] Y. Berkovich and Z. Janko, Groups of Prime Power Order , 1 , Walter de Gruyter GmbH Co. KG, Berlin, 2008.
[2] M. Deaconescu, Classi cation of nite groups with all elements of prime order, Proc. Amer. Math. Soc. , 106 no. 3
(1989) 625{629.
[3] L. Dornhoff, Group representation theory. Part A: Ordinary representation theory , Pure and Applied Mathematics,
7 , Marcel Dekker, Inc., New York, 1971.
[4] The GAP group, GAP-Groups, Algorithms, and Programming, Version 4.7.4, http://www.gap-system.org, 2014.
[5] I. M. Isaacs, Character theory of nite groups , Pure and Applied Mathematics, No. 69, Academic Press [Harcourt
Brace Jovanovich, Publishers], New York-London, 1976.
[6] Z. Janko, Finite 2-groups with exactly four cyclic subgroups of order 2 n , J. Reine Angew. Math. , 566 (2004) 135{181.
[7] Z. Janko, Finite 2-groups G with j Ω2 ( G ) j = 16, Glas. Mat , 40 no.1 (2005) 71{86.
[8] M. Tarnauceanu, Finite groups with a certain numb er of cyclic subgroups, Amer. Math. Monthly , 122 (2015)
275{276.
[9] M. Tarnauceanu, Finite groups with a certain numb er of cyclic subgroups I I, arXiv:1604.04974.
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