author = { Ralph, W. AND Hidy, Muriel E. },

title = { Research Notes },

publisher = {Cambridge University Press (CUP)},

isbn = {0022-0507},

isbn = {1471-6372},

keywords = { Economics, Econometrics and Finance (miscellaneous) , Economics and Econometrics , History },

year = {1948},

url = { http://slubdd.de/katalog?TN_libero_mab2 }