On second order Thom-Boardman singularities
  In this paper we derive closed formulas for the Thom polynomials of two families of second order Thom-Boardman singularities \Sigma^{i,j}. The formulas are given as linear combinations of Schur polynomials, and all coefficients are nonnegative. 
L. M. Feher, B. Komuves