Phase transitions in superfluid Fermi-liquid (FL) from one-gap superfluid s
tate to two-gap state have been studied. The systems of fermions of one and
two (nuclear matter) sorts are considered. The temperature and density dep
endences of the order parameters for new two-gap solutions of the self-cons
istent equations are determined. (C) 2000 Elsevier Science B.V. All rights
reserved.