  Transition temperatures $T_{c}$ calculated using the BCS model
electron-phonon interaction without any adjustable parameters agree with
empirical values for quasi-2D cuprate superconductors. They follow from a
two-dimensional gas of temperature-dependent Cooper pairs in chemical and
thermal equilibrium with unpaired fermions in a boson-fermion (BF) statistical
model as the Bose-Einstein condensation (BEC) singularity temperature is
approached from above. The {\it linear} (as opposed to quadratic) boson
dispersion relation due to the Fermi sea yields substantially higher $T_{c}$'s
with the BF model than with BCS or pure-boson BEC theories.
