A 43-page book with a bidding-tree of the whole system as played by Eric Greco and Geoff Hampson during most their career. The system is a professional implementation of Standard Modern Precision (SMP), with the main change that 1C-1H denies 5+S and 1C-1S is 5+S 8+ HCP, the most frequent variation from classic SMP.
Greco-Hampson took up a strong club in the early 2000’s, continued to star on various world-class teams, and are currently making their way into the Nickell team lineup. They originally started with Standard Modern Precision (SMP) with a Multi 2D in certain situations. Eventually they gave up the Multi 2D and switched to 1C-1H denying 5+S and 1C-1S as natural 8+ HCP in the 2010’s.
This book is an excellent description of a pro implementation of SMP that you can use to draw inspiration from for a strong club or any 5-card major system.