Изменения

* [http://books.google.ru/books?id=gvVK07D4wwUC&pg=PA161&lpg=PA161 книгаJean-Claude Junqua,Gertjan van Noord — Robustness in Language and Speech Technology — Kluwer Academic Publishers, где можно узнать много нового про аппроксимации]2001 — ISBN 0-7923-6790-1* [https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CCkQFjAA&url=http%3A%2F%2Fwww.cs.ucsb.edu%2F~omer%2FDOWNLOADABLE%2Fcfg-reg09.pdf&ei=AQbcUrL_DIfi4wSx3IDYDg&usg=AFQjCNHsSWONr0_c2MDgvApwrhc81deY0w&sig2=_2iZj4Xexe6-p5Cyt-GEMg&bvm=bv.59568121,d.bGE Разобрано много примеров аппроксимаций] * [https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&cad=rja&ved=0CCkQFjAA&url=http%3A%2F%2Facl.ldc.upenn.edu%2FJ%2FJ00%2FJ00Strongly Regular Grammars and Regular Approximation of Contex-1003.pdf&ei=CgfcUrWwA-mF4ATY7IHQAQ&usg=AFQjCNG3QHL7yQSwTUbSi9xkse2j0p6YaA&sig2=UF88aXWRAbapv4o_UrIjGg&bvm=bv.59568121,d.bGE практические эксперименты с регулярной аппроксимациейFree Languages]