Tabachnikov, Serge.
Geometry and billiards - Providence, R.I. :;[s.l.] : American Mathematical Society ;;Mathematics Advanced Study Semesters, c2005. - 1 online resource (xi, 176 p. : ill.) - The Student Mathematical Library, v. 30 .
Includes bibliographical references (p. 167-173) and index.
9781470421410 (online)
Billiards
Calculus of variations
Geometry
Geometry and billiards - Providence, R.I. :;[s.l.] : American Mathematical Society ;;Mathematics Advanced Study Semesters, c2005. - 1 online resource (xi, 176 p. : ill.) - The Student Mathematical Library, v. 30 .
Includes bibliographical references (p. 167-173) and index.
9781470421410 (online)
Billiards
Calculus of variations
Geometry