@article{,
      recid = {1389217},
      title = {Planetary flagship missions : Mars Rover 2020 and Europa  Clipper :},
      number = {Serial no. 115-22 (United States. Congress. House.  Committee on Science, Space, and Technology (2011))},
      pages = {iv, 84 pages ;},
      note = {"Serial no. 115-22."},
      url = {http://library.usi.edu/record/1389217},
}