Degenerations of Schubert varieties of SL(n)/B to toric varities
  Using polytopes defined in an earlier paper, we show in this paper the existence of degenerations of a large class of Schubert varieties of SL_n to toric varieties by extending the method used by Gonciulea and Lakshmibai for a minuscule G/P to Schubert varieties in SL_n 
R. Dehy, R. Yu