Introducing, my name is Yudi. I am from Bali, indonesia. i am in my last year of my study in university. I am in the electrical departement. currently i am working on my thesis about electrical grounding, especially on concrete encased electrode system. and i am lacking of literature on this particular subject. can you give me any advise for literature on this subject? since in bali you can't find many books, especially on technical subjects. i need to know how to calculate the size of the rebar that is needed in this system, and also what are other components needed to know to design a grounding system using concrete encased electrode method.