1. M. Ojanguren and R. Sridharan, “A Note on the Fundamental Theorem of Projective Geometry,” Comm. Math. Helv. 44(3), 3100–3150 (1969).
2. W. Benz, Vorlesungen über Geometrie der Algebren (Springer-Verlag, Berlin etc., 1973).
3. V. V. Vishnevskii, B. A. Rozenfel’d, and A. P. Shirokov, “On the Development of the Geometry of Spaces over Algebras,” Izv. Vyssh. Uchebn. Zaved. Mat., No. 7, 38–44 (1984) [Soviet Mathematics (Iz. VUZ) 28 (7), 36–42 (1984)].
4. J. Milnor and D. Husemoller, Symmetric Bilinear Forms (Springer, Berlin, 1973; Nauka, Moscow, 1986).
5. V. M. Levchuk and O. A. Starikova, “Normal Form and Schemes of Quadratic Forms,” Fundament. i Prikl. Matem. 13(1), 161–178 (2007).