1. Borevich, Z.I., Shafarevich, I.R.: Number Theory. Academy Press, New York (1966)
2. Birmajer, D., Gil, J.B., Weiner, M.D.: On Hensel’s roots and a factorization formula in $$\mathbb{Z}[[x]]$$ Z [ [ x ] ] . Integers 14, #A47 (2014)
3. Casas, J.M., Omirov, B.A., Rozikov, U.A.: Solvability criteria for the equation $$x^q = a$$ x q = a in the field of $$p$$ p -adic numbers. Bull. Malays. Math. Sci. Soc. 37(3), 853–864 (2014)
4. Freund, P.G.O., Witten, E.: Adelic string amplitudes. Phys. Lett. B 199, 191–194 (1987)
5. Gouvea, F.Q.: A marvelous proof. Am. Math. Mon. 101(3), 203–222 (1994)