[Haskell] implementing pointers-based data structure

hi everybody, i have to implement some data structure which is usually implemented with pointers in imperative languages (can think of it as a double linked list). i'd like to know how i have to do that. is there any standard way of converting pointer-based data structure into an inductively-defined data type (like standard haskell list) ? is-it possible ? or would it be good to define the data structure in c and write a haskell wrapper around the c code ? thank you a lot, bye, vo minh thu