Also regarding Simon Williams book, he played lines that he recommend in the last British Championship. Even though opponents were seen buying his book, and going off to prepare the night before. In most cases got the worse position, but game dynamic enough to keep alive, and sometimes to win.

Bye John S

I own the Williams book and have seen the Pinsky book. Still I cannot do without Schwarz' Holländisch from 1964 and Tajmanov's Damengambit bis Holländisch from 1980. This says enough, I think.
In fact, these two old books combined with a decent database could very well do. Too many important lines are missing in the recent books. Inn2 already pointed out 1.d4 f5 2.c4 Nf6 3.Nc3 e6 4.f3!? I will add 1.d4 f5 2.g3 Nf6 3.Bg2 e6 4.Nf3 Be7 5.o-o o-o 6.c4 d6 7.Nc3 Qe8 8.Re1 Qg6 9.Qb3!?
Further especially Williams underestimates the Nh3 lines, recommends a line for Black after 1.d4 f5 2.c4 e6 3.g3 Nf6 4.Bg2 Bb4+ 5.Nbd2 which is absolutely unreliable - he recently lost himself with it.
I found Williams' book, with all those enthusiastic reviews, simply disappointing because of superficiality. For instance: on page 43 Williams writes "I believe that the chances are about equal." Under the diagrammed position on the next page we can read that White is slightly better. In reality I think Black has severe problems.
The big problem with English chess books, is that they usually ignore sources in other languages. The Iljin-Zjenevsky is a perfect example - which is even true for Bellin's book.
The best book on the Iljin-Zjenevsky? The golden oldie by Schwarz, I am afraid .....
As far as I know, there is no book on the IZ against White non-fianchetto systems; only Tajmanov briefly mentions 1.d4 f5 2.c4 Nf6 3.Nc3 e6 4.e3 Be7 for instance.
Another good idea is to look on the website of Keith Hayward, a specialist on the IZ for many years now.
Can I find that Jon Rogers review somewhere on internet?

Thanks for this!  I'll definitely give the Simon Williams book a look.

I actually think Simon Williams Play The Classical Dutch is terrific; not thorough, but an excellent beginner's book, which really explains what you should be striving for when you play. It is published by Gambit. The other book I use is called The Classical Dutch and is by Jan Pinski (published by Everyman). I think using these two books together will be enough to see you through.