The custom of those guhya or secretive Bhairava is definitely an oral custom that is continuous within the Expert disciple custom. Their karmakand rituals and procedures are key, they don't seem to be written down but only learnt and practiced in guru disciple custom. From the Kala Bhairav Ashtakam by https://vashikaran76308.develop-blog.com/36214567/bhairav-secrets