A path integral formula for quark condensate states in a modified PQCD A. Cabo Montes de Oca, N. G. Cabo-Bizet and A. Cabo-Bizet Eur. Phys. J. C, 64 1 (2009) 133-145 Published online: 16 September 2009 DOI: 10.1140/epjc/s10052-009-1127-7