The best "book" on the Exchange is Henrich's ChessBase CD.  Against an early ..h6, he recommends the central expansion plan with Nge2, f3, 0-0, and ultimately e4.  The insertion of the moves ..h6/Bh4 is thought to be favorable for White because the Bh4 can drop back to f2 to avoid being exchanged.  Model games for White: Botvinnik-Larsen, Nordwijk 1965 and B.Lalic-P.Ascic, Zadar 1997.

Ups...sorry! I've overlooked an important detail...
Anyway: I also think h6 is an early commitment so castling long and pushing g4 it's an option. 
The plan ...b6 and Ba6 is not to my liking either. Maybe instead 15. Rc2 is possible play 15. Bf6 Bf6 16. b4 (not allowing 16...c5) 16...Nc7 (otherwise 17.b5 could be strong) and now "you" could play 17.Qb3 (still it's not possible 17...c5) or 17.Rfd1. If black plays at some point with b5 white's e2 knight can improve via f4 and d3 while black's knight can't easily aim for b6 or d6 squares. So it should be very comfortable for white playing this position, it's a good Tartakower for white i think.

Maybe u can try 7...Nh5!? There is an article about the subject in NIC yb 47writen by P. van der Sterren. After 8.Be7 Qe7 one of the main ideas is play a quick g6-Ng7-Bf5, waiting to see where white castles since black will surely consider avoid an oposite castling position. 
The autor's opinion is that in order to achieve some advantage white has to risk a little and posibly play with an early g4, anyway i think white keeps pressure with long castling plans. I think Timman played games with this line vs. Lobron and Short and Kasparov vs. Anderson

Bf4 followed by h3 and g4 is indeed interesting.  I'd also be tempted to look at 10. Nf3 though, in this sort of QGD structure with an early h6 a quick Ne5/f4/g4 Pillsbury formation attack is fairly thematic, even with short castling...

More specifically these exchange QGD lines where black plays ...b6 are generally a slightly inferior Tartakower line (although that may be entirely due to how effective the Pillsbury formation is) , although here of course with 10 Nge2 it's not quite the same.

Anyway, my main suggestion would probably be 12 Bf5 avoiding the exchange of good vs bad bishop.  Here I'm also guided by Kasparov-Beliavsky, 5th match game 1984 (although that was an inferior Tartakower line by transposition).

Best book on QGD exchange I've seen is Sadler's QGD book, and Yermo's chapter in the Road to Chess Improvement is helpful.  Otherwise everyone just gives the basic formula for white assuming black will be compliant, roll over and die.  On the other hand everyone seems to ignore b6 setups, so it's good to look at the Tartakower lines too.

The QGD Exchange troubles me. For the second subsequent time I got nothing out from the opening. I had to work quite hard for the draw. So
1) could you name 1 or 2 good books about the QGD Exchange?
2) could you comment on the opening stage?
Thanks.

MNb - Glaser, K
CL/2010/C2 board 4

1.d4 Nf6 2.c4 e6 3.Nc3 d5 4.cxd5 exd5 5.Bg5 c6 6.Qc2 Be7 7.e3 O-O 8.Bd3 h6 9.Bh4 Re8 10.Nge2 b6 11.O-O Ba6 12.Bxa6 Nxa6 13.Qa4 Qc8 14.Rac1 Qb7 15.Rc2 Rac8 16.Nc1 c5 17.Bxf6 Bxf6 18.Nb5 Red8 19.Nd3 cxd4 20.Nxd4 Nc5 21.Nxc5 bxc5 22.Nf3 d4 23.exd4 cxd4 24.Rd2 Rc6 25.Rfd1 Ra6 26.Qc4 Rc8 27.Qb3 Rb6 28.Qa3 Be7 29.Qa4 Rxb2 30.Rxd4 Bc5 31.R4d2 Rxd2 32.Rxd2 Qb1+ 33.Qd1 Qxd1+ 34.Rxd1 Bb4 35.Ne1 Bxe1 36.Rxe1 Rc2 37.Ra1 a5 38.a4 g5 39.h3 Kg7 40.Ra3 Rc4 41.g3 h5 42.Kg2 f5 43.Kf3 Kf6 44.Rb3 Rxa4 45.Rb6+ Ke5 46.Rb5+ Ke6 47.Rb6+ Ke7 48.Rb5 g4+ 49.Kg2 Kf6 50.Rb6+ Ke5
draw