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.
Chicago-tyylinen lähdeviittausOvsienko, Valentin., ja 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-viiteOvsienko, Valentin., ja Serge Tabachnikov. Projective Differential Geometry Old and New: From the Schwarzian Derivative to the Cohomology of Diffeomorphism Groups. New York: Cambridge University Press, 2005.
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