  We generalize the Landauer formula to describe the dissipative electron
transport through a superconducting point contact. The finite-temperature,
linear-in-bias, dissipative DC conductance is expressed in terms of the phase-
and energy-dependent scattering matrix of the Bogoliubov quasiparticles in the
quantum point contact. The derived formula is also applicable to hybrid
superconducting-normal structures and normal contacts, where it agrees with the
known limits of Andreev reflection and normal-state conductance, respectively.
