Abstract
Some consequences of the modified two sublattice model being an extension of the Mitsui model Citation[1] are discussed in connection with recently obtained experimental data on hydrostatic pressure dependence of T c for SASD type crystals. It is shown that both the sign of the dT c /dp and nonlinearyty of the T c (p) function can be predicted from the proposed model assuming that some parameters describing the interactions between active groups depend linearly on hydrostatic pressure p. The so-called pressure factor α is estimated to be in the limits from 3 × 10−4 MPa−1 to 12 × 10−4 MPa−1.