[[1] Y. Berkovich, Groups of Prime Power Order, Vol. 1, De Gruyter Expositions in Mathematics, 46, Walter de Gruyter GmbH & Co. KG, Berlin, 2008.10.1515/9783110208221]Search in Google Scholar
[[2] R. Cheng, A. Dasgupta, B.R. Ebanks, L.F. Kinch, L.M. Larson and R.B. McFadden, When does f−1 = 1/f?, Amer. Math. Monthly 105 (1998), no. 8, 704–717.10.1080/00029890.1998.12004952]Search in Google Scholar
[[3] R. Euler and J. Foran, On functions whose inverse is their reciprocal, Math. Mag. 54 (1981), no. 4, 185–189.10.1080/0025570X.1981.11976923]Open DOISearch in Google Scholar
[[4] M. Griffiths, f(f(x)) = x, windmills, and beyond, Math. Mag. 83 (2010), no. 1, 15–23.10.4169/002557010X479956]Search in Google Scholar
[[5] M. Herzog, Counting group elements of order p modulo p2, Proc. Amer. Math. Soc. 66 (1977), no. 2, 247–250.10.1090/S0002-9939-1977-0466316-5]Search in Google Scholar
[[6] H. Kurzweil and B. Stellmacher, The Theory of Finite Groups. An Introduction, Springer-Verlag, New York, 2004.10.1007/b97433]Search in Google Scholar
[[7] D.J. Schmitz, Inverse ambiguous functions on fields, Aequationes Math. 91 (2017), no. 2, 373–389.10.1007/s00010-016-0464-5]Search in Google Scholar
[[8] D. Schmitz and K. Gallagher, Inverse ambiguous functions on some finite non-abelian groups, Aequationes Math. 92 (2018), no. 5, 963–973.10.1007/s00010-018-0542-y]Search in Google Scholar
[[9] R. Schnabel, Elemente der Gruppentheorie, Mathematik für die Lehrerausbildung, B.G. Teubner, Stuttgart, 1984.10.1007/978-3-322-94759-8]Search in Google Scholar