Ieno, Y. (2020). A general expression of the triplets of integer sided triangles with a $120^{\circ}$ angle, in parallel with the case of a $60^{\circ}$ angle.
Chicago Style (17th ed.) CitationIeno, Yasushi. A General Expression of the Triplets of Integer Sided Triangles with a $120^{\circ}$ Angle, in Parallel with the Case of a $60^{\circ}$ Angle. 2020.
MLA (9th ed.) CitationIeno, Yasushi. A General Expression of the Triplets of Integer Sided Triangles with a $120^{\circ}$ Angle, in Parallel with the Case of a $60^{\circ}$ Angle. 2020.
Warning: These citations may not always be 100% accurate.