1. W. Bosma and J. Cannon, Handbook of magma functions, Department of Math., University of Sydney. http://magma.maths.usyd.edu.au/magma/.
2. Z. Cao, A note on the Diophantine equation $$a^x+b^y=c^z$$, Acta Arith., 91(1999), 85–93.
3. Z. Cao and X. Dong, On Terai’s conjecture, Proc. Japan Acad., 74A(1998), 127–129.
4. I. N. Cangul, M. Demirci, I. Inam, F. Luca and G. Soydan, On the Diophantine equation $$x^2+2^a \cdot 3^b \cdot 11^c=y^n$$, Math. Slovaca, 63(2013), 647–659.
5. S. Cenberci and H. Senay, The Diophantine Equation $$x^2 + B^m = y^n$$, Int. J. Algebra, 3(2009), 657–662.