If you are looking for a specific manual that mentions Timman, you might be thinking of Jacob Aagaard’s Attacking Manual series, which is available on Scribd and frequently uses Timman's games to illustrate complex attacking themes. (Jan Timman) The Art of Chess Analysis PDF - Scribd
: Widely considered one of the best game collection books ever written.
The specific title you likely mean is , as "Attack" is a frequent theme in his games rather than the primary title of his most famous manual. Where to Download and Read