On the description of nonunitary neutrino mixing

@article{Escrihuela2015OnTD,
  title={On the description of nonunitary neutrino mixing},
  author={F. J. Escrihuela and David Vanegas Forero and O. G. Miranda and M. T{\'o}rtola and Jos{\'e} W. F. Valle},
  journal={Physical Review D},
  year={2015},
  volume={92},
  pages={053009}
}
28 pages.- 8 figures.- typos corrected.- modified bounds on non-unitarity parameters.- new figs 3 and 4 

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