Leszek W. Guła, The Proof of the Beal’s Conjecture, BSMaSS Volume 12, The Bulletin of Society for Mathematical Services and Standards (Volume 12)
https://www.scipress.com/BSMaSS.12.21
Abstract:
    The truly marvellous proof of The Fermat's Last Theorem (FLT). Two false proofs of FLT for n = 4. The incomplete proof of FLT for odd prime numbers n ∈ Ρ. The proof of The Beal's Conjecture. The Beal's Theorem.
Keywords:
    Common Prime Factor, Diophantine Equations, Fermat Equation, Greatest Common Divisor, Newton Binomial Formula