heterogeneous reaction
 

hi, i use 3.15 version of starcd.i need to set up a heterogenous(gas-surface) reaction scheme.how do i do it through user sub routines. i need to use SORCSA,SCALFN,SORENT right?? the sample coding doesn't give a fair idea to understand their implementation.some one kindly help!! i need to know this to complete my project!!! thanks!!!