diff --git a/SFEM/README.md b/SFEM/README.md
index 6ddae100302bed7a6b06e5e072a653da70580748..0e3fa8b5ab29d83f50164a9395cb49a81211f530 100644
--- a/SFEM/README.md
+++ b/SFEM/README.md
@@ -47,12 +47,24 @@ Instructions for Debian/Ubuntu based workstations are as follows.
 
 * [generateRF](./generateRF) contains all the scripts used to generate and vizualize the random fields
 * [cellRF](./cellRF) contains an example in which we generate a single variable random field on a lattice unit cell
-* [rnnRF](./rnnRF) contains an example in which we generate a  correlated two-variable random field and the siulations script to run Monte Carlo simulations on a multiscale lattice compression using a [MOAMMM stochastic neural network](https://gitlab.uliege.be/moammm/moammmPublic/syntheticdata/sveresponses) as surrogate of the cell response.
+* [rnnRF](./rnnRF) contains an example in which we generate a  correlated two-dimension random field and the siulations script to run Monte Carlo simulations on a multiscale lattice compression using a [MOAMMM stochastic neural network](https://gitlab.uliege.be/moammm/moammmPublic/syntheticdata/sveresponses) as surrogate of the cell response.
 
 
 ### generateRF
 
-
+* [generateRF.py](./generateRF/generateRF.py):
+  * The RF is defined from the mean and standard deviation of the variables as well as from their correlation following for example for a 2-dimension RF:  
+     meanX = np.array([0.5,10])    # mean of variables
+     stdX = np.array([0.05,0.1])       # std of variables
+     rho = 0.2
+     R0_XY = np.array([[1, rho], [rho, 1]]) 
+  * And from a the correlation lengths along the 3 direction
+     lc = [15., 15., 15.]            # correlation length
+  * The number of RFs to be generated follows from
+     Nsim =10
+  * The Random fields will be generated at the spatial points defined in terms of their coordinates. 
+     One example of points coordinates can be found in [rnnRF/GPData/oordinate_P_ZZ_OnPhysical_11.csv](./rnnRF/GPData/oordinate_P_ZZ_OnPhysical_11.csv) stored following 3 coordinates, point number and point volume (for a FE simulation)
+     The script tries to read a file in 'mechDir+''/GPData'' '
 
 
 ### cellRF