Inside the Quarks
  We build a model which is based on the assumption that the {\bf c} and {\bf s,b} quarks are excited states of {\bf u} and {\bf d} quarks. This model predicts the non-existence of the {\bf top} quark and estimates the size of the quarks to be of order $10^{-7}$ fm. 
E.N.Rodionov