DEM generation using Stereo Images

I am working on creating DEM’s with Sentinel 1 images. I am planning to do it by InSAR and then with the help of SNAPHU plugin. I was reading some papers and i got to know Stereo-Images are also use to create DEM’s. Can someone help me in knowing how i can do it with the help of Stereo Images. I couldnt find any relevant method or a do-abke method.
any suggestion/advice would be helpful