[GRASSLIST:5610] import IDRISI raster

Hello,

I have IDRISI raster files (rst, rdc) and would like to import them into
GRASS. I already found a post from 1996 concerning r.out.idrisi/r.in.idrisi.

If this command was once created I assume it has been merged into r.in.gdal.
However the gdal raster format page does not list the IDRISI raster format.

Does anybody knows a work-around to import IDRISI raster formats into GRASS?

thanks, Martin