Tracing the origin of the single-spin asymmetries observed in inclusive   hadron production processes at high energies
  It is pointed out that the existing models for the left-right asymmetries observed in single-spin inclusive hadron production processes can be differentiated experimentally. Several such experiments are proposed with which the basic assumptions of these models can be tested individually. 
C. Boros, Liang Zuo-tang, Meng Ta-chung and R. Rittel