  An alternative model for c-axis resistivity in layered high-Tc crystalline
superconductors is proposed and has been characterized as an essentially
two-dimensional Fermi liquid. Average ionization energy is included as
additional parameter that determines the concentration of tunnelling electrons
between Cu-O2 layers. This model agrees well quantitatively with the Bi2212 and
Y123 single crystals, and qualitatively with the pure 1212 phase polycrystals.
