The One-zero Textures of Majorana Neutrino Mass Matrix and Current   Experimental Tests
  We carry out a complete and systematic study of all the possible one-zero textures for the neutrino mass matrix in light of the recent neutrino oscillation data which hint to a relatively large non-vanishing value for the smallest mixing angle ($\theta_z$). We find that all the six possible one-zero textures are able to accommodate the experimental data, with five cases allowing also for non-invertible mass matrices. We present symmetry realizations for all the one-zero singular and non-singular patterns in type-I and type-II seesaw mechanism schemes. 
E.I. Lashin (Ain Shams U., Cairo & Zewail City of Science and Tech.,   Giza & ICTP, Trieste) and N. Chamoun (HIAST & Bonn U.)
hep-ph