Phenomenology of Two-Texture Zero Neutrino Mass Matrices
  The generic predictions of two-texture zero neutrino mass matrices in the flavor basis have been examined especially in relation to the degeneracies between mass matrices within a class and interesting constraints on the neutrino parameters have been obtained. It is shown that the knowledge of the octant of $\theta_{23}$, the sign of $\cos\delta$ and neutrino mass hierarchy can be used to lift these degeneracies. 
S. Dev, Sanjeev Kumar, Surender Verma and Shivani Gupta