Semileptonic (D_s^+ -> phi l nu) decay in QCD light cone sum rule
  We calculate the form factors V, A_1, A_2 and A_0 appearing in the (D -> phi) transition in light cone QCD sum rule method. We compare our results on these form factors with the current experimental results and existing theoretical calculations. 
T. M. Aliev, A. Ozpineci, M. Savci