Jamel Ghanouchi, An Elementary Proof of Fermat-Wiles and Catalan-Mihailescu Theorems and Generalization to Beal Conjecture, BMSA Volume 8, Bulletin of Mathematical Sciences and Applications (Volume 8)
https://www.scipress.com/BMSA.8.1
Abstract:
    We begin with Fermat, Catlan and Fermat-Catalan equations and solve them.
Keywords:
    Catalan, Diophantine, Fermat, Fermat-Catalan, Resolution