@article{441904,
      recid = {441904},
      author = {Das, Ashok,},
      title = {Lectures on gravitation [electronic resource] /},
      publisher = {World Scientific,},
      address = {Hackensack, N.J. :},
      pages = {1 online resource (xi, 338 p.) :},
      year = {2011},
      url = {http://library.usi.edu/record/441904},
}