Serge Perrine 2022. About Diophantine Equations z^2=(9\(\beta\)^2-4)y^2-(4\(\beta\)^2). Recent Advances in Mathematical Research and Computer Science Vol. 8. (Feb. 2022), 94–112. DOI:https://doi.org/10.9734/bpi/ramrcs/v8/13257D.