Abdullayeva G.Sh. 2022. “THE ORTHOGONAL GROUP OF THE TWO-DIMENSIONAL BILINEAR-METRIC SPACE WITH THE FORM x_1 y_1+2x_2 y_2 OVER THE FIELD OF RATIONAL NUMBERS”. Journal of Integrated Education and Research 1 (4):67-73. https://ojs.rmasav.com/index.php/ojs/article/view/224.