@article{234738,
      recid = {234738},
      author = {Lanphere, Marvin A., and Dalrymple, G. Brent.},
      title = {First-principles calibration of ³⁸Ar tracers :  implications for the ages of ⁴⁰Ar/³⁹Ar fluence monitors /},
      publisher = {U.S. Dept. of the Interior, U.S. Geological Survey ;},
      address = {Reston, VA :},
      pages = {iii, 10 p. :},
      year = {2000},
      url = {http://library.usi.edu/record/234738},
}