作者:KANE, EJ; UNAL, H
作者单位:National Bureau of Economic Research; University System of Maryland; University of Maryland College Park
作者:SCHWERT, GW
作者单位:National Bureau of Economic Research
作者:BLISS, RR; RONN, EI
作者单位:University of Texas System; University of Texas Austin; University of Texas System; University of Texas Austin