heres a few links related to more strength orientated layer programmes:
http://tnation.T-Nation.com/free_online_forum/sports_body_training_performance_bodybuilding_thibaudeau/quadruple_strength_layers?id=5780879&pageNo=1
Bare in mind that really all of the layer programmes focus on improving performance and strength. Some are just slightly geared more towards hypertrophy/strength than others but all of them are going to bring strength gains