The Explicit and Dynamical Chiral Symmetry Breaking in an Effective   Quark-quark Interaction Model
  A method for obtaining the small current quark mass effect on the dressed quark propagator from an effective quark-quark interaction model is developed. Within this approach both explicit and dynamical chiral symmetry breaking has been analyzed. a comparision with previous results is given. 
Hong-shi Zong, Xiao-hua Wu, Feng-yao Hou, and En-guang Zhao