The book appeared first in 1979, published by Teubner Verlag. Thebook is now out of print, but their are still many people who referto it, especially to the first chapters devoted to rationaltransductions. Therefore I make the first four chapters available inelectronic form. I am grateful to persons who indicate me mistakes Idid in typing the text.
The bibliography is of course inaccurate now, and there are manynew and important results that have been found since the lateseventies. The latest modern exposition is presently the book ofJacques Sakarovitch "Elements of Language Theory",available in French and that appeared recently in English atCambridge University Press.
There is one mysterious item that can be answered now: I give areference to a forthcoming volume C of Eilenberg's book. At thattime, Samuel Eilenberg indeed planned to write a four volume book,the third volume devoted to context-free languages and the forth todecidability. However, he did not finish this third volume.
Downloadhere.
There exists a numeric version of the book, downloadhere.
Last modified Oct 13, 2012.