Ashbacher, 1990, More on palindromic squares, J. Recreational Math., 22, 133
Banks, 2004, Almost all palindromes are composite, Math. Res. Lett., 11, 853, 10.4310/MRL.2004.v11.n6.a10
Banks, 2005, Prime divisors of palindromes, Period. Math. Hungar., 51, 1, 10.1007/s10998-005-0016-6
Keith, 1990, Classification and enumeration of palindromic squares, J. Recreational Math., 22, 124
Laurent, 1995, Formes linéaires en deux logarithmes et déterminants d'interpolation, J. Number Theory, 55, 285, 10.1006/jnth.1995.1141
Luca, 2003, Palindromes in Lucas sequences, Monatsh. Math., 138, 209, 10.1007/s00605-002-0490-3