Katok, A. B., & Strelcyn, J. (1986). Invariant manifolds, entropy and billiards: Smooth maps with singularities. Springer-Verlag.
Chicago Style (17th ed.) CitationKatok, A. B., and Jean-Marie Strelcyn. Invariant Manifolds, Entropy and Billiards: Smooth Maps with Singularities. Berlin ; New York: Springer-Verlag, 1986.
MLA (9th ed.) CitationKatok, A. B., and Jean-Marie Strelcyn. Invariant Manifolds, Entropy and Billiards: Smooth Maps with Singularities. Springer-Verlag, 1986.
Warning: These citations may not always be 100% accurate.