J. Kannan
"Lattice Points of an Innite Cone x2+y2=(2n+2n)z2".
International Journal of Mathematical Trends and Technology,
vol: 38,
No. 2
Oct. 2016, pp: 95 - 98,
https://scholar9.com/publication-detail/lattice-points-of-an-innite-cone-x2y22n2nz2-26678