Areas of Research:      Gravitational energy
 

     Publications
 

       Present  Address :  CBPF/LAFEX
                                           Rua Dr. Xavier Sigaud, 150
                                           Room 504B
                                           Urca - Rio de Janeiro - RJ
                                           22290-180
                                           Brazil
 

      Telephone:
 

    Email:    berg@cbpf.br