@article{26201,
      author = {Friedman, Milton, and Schwartz, Anna J.},
      url = {http://library.usi.edu/record/26201},
      title = {Monetary statistics of the United States: estimates,  sources, methods},
      publisher = {National Bureau of Economic Research,},
      recid = {26201},
      pages = {xx, 629 p.},
      address = {New York,},
      year = {1970},
}