Self-consistent model of fermions
  A composite model of the fundamental fermions based on colour preons is discussed. It is found that, if endowed with the pairwise (repulsive/attractive) chromoelectric fields, preons would cohere in a series of structures, resembling by their properties the three generations of the fundamental fermions. The model is self-consistent in the sense that it makes no use of free or experimental input parameters. 
V. Yershov