A. Hari Ganesh, K. Prabhakaran, and G. Sivakumar. “Solutions of Ternary Quadratic Diophantine Equations \(x^2+y^2 \pm \dot{\lambda} y=z^2\)”. Malaya Journal of Matematik, vol. 8, no. 02, Apr. 2020, pp. 427-32, doi:10.26637/MJM0802/0017.