Information from the Chessbase website:
THE TROMPOWSKY ATTACK
The Trompowsky attack, which arises after 1.d4 Nf6, Bg5 has matured into a full-blooded opening. On this CD a repertoire from White�s point of view is given. Database texts give you explanations of the important and critical position. Just playing trough some of the key game will enable you to understand the main points of the variation. Apart from that there is a large reference database with over 6,000 games on the CD, as well as a smaller Database with trainings questions. Available in the following languages: English and German.