Burago, D.; Ferleger, S.; Kononenko, A. (1 January 1998). "Uniform Estimates on the Number of Collisions in Semi-Dispersing Billiards". Annals of Mathematics. 147 (3): 695–708. doi:10.2307/120962. JSTOR120962.
Burago, D. (1 February 2006). "Semi-dispersing billiards of infinite topological entropy". Ergodic Theory and Dynamical Systems. 26 (1): 45–52. doi:10.1017/S0143385704001002. S2CID121644309.
Burago, D.; Ferleger, S.; Kononenko, A. (1 January 1998). "Uniform Estimates on the Number of Collisions in Semi-Dispersing Billiards". Annals of Mathematics. 147 (3): 695–708. doi:10.2307/120962. JSTOR120962.
Burago, D. (1 February 2006). "Semi-dispersing billiards of infinite topological entropy". Ergodic Theory and Dynamical Systems. 26 (1): 45–52. doi:10.1017/S0143385704001002. S2CID121644309.