Erratum: A ``transversal'' fundamental theorem for semi-dispersing billiards
One of the lemmas is not necessarily true as stated [the authors, ibid. 129, No.3, 535-560 (1990; see the paper above)], but after a minor reformulation it is true. This has a few minor consequences, but the main assertions remain true. A few other minor corrections are listed.
scientific article; zbMATH DE number 4214990