  Pairing effects in non-uniform nuclear matter, surrounded by electrons, are
studied in the protoneutron star early stage and in other conditions. The
so-called nuclear pasta phases at subsaturation densities are solved in a
Wigner-Seitz cell, within the Thomas-Fermi approximation. The solution of this
problem is important for the understanding of the physics of a newly born
neutron star after a supernova explosion. It is shown that the pasta phase is
more stable than uniform nuclear matter on some conditions and the pairing
force relevance is studied in the determination of these stable phases.
