  We analyse the pairing symmetry of the order parameter in superconducting
Sr2RuO4. Basing on a realistic three dimensional 3 band energy spectrum we have
introduced effective attractive ellectron-electron interactions and found a
solution which has line nodes in the gap in alpha and beta bands but not in
gamma band. This state breaks time reversal symmetry and leads to the proper
temperature dependence of the specific heat, in-plane penetration depth and
thermal conductivity.
