Nicola Fragnito, The Last Theorem of Fermat for n=3, BMSA Volume 2, Bulletin of Mathematical Sciences and Applications (Volume 2)
https://www.scipress.com/BMSA.2.68
Abstract:
    In this paper on FLT, one solves the case n=3 in elementary way, extensible to n odd. The author works only through the sole factorization in factors and with the proceeding for absurd, that is if x, y, z are prime among them, under the hypothesis that (x, y, z) are a solution, one obtains that the first and the second term of an equivalent relation are odd (the first) and even (the second).
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