Diff_SSTL_2 class 2 in IBIS model for EP4CE55

Hello!

I have downloaded IBIS for Cyclone 4. But there are no any models for dsstl2c2_ciop_d16m and dsstl2c2_cion_d16m. Where I could find models for this pins? Or maybe it is possible to use another models from this IBIS-file?