Ovsienko, V., & Tabachnikov, S. (2005). Projective differential geometry old and new: From the Schwarzian derivative to the cohomology of diffeomorphism groups. New York: Cambridge University Press.
استشهاد بنمط شيكاغوOvsienko, Valentin., و Serge Tabachnikov. Projective Differential Geometry Old and New: From the Schwarzian Derivative to the Cohomology of Diffeomorphism Groups. New York: Cambridge University Press, 2005.
MLA استشهادOvsienko, Valentin., و Serge Tabachnikov. Projective Differential Geometry Old and New: From the Schwarzian Derivative to the Cohomology of Diffeomorphism Groups. New York: Cambridge University Press, 2005.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.