 measur qualiti sociolog research problem us scienc citat index the problem assess qualiti scientif public long major impedi progress sociolog scienc most research typic paid homag belief quantiti output equival qualiti ahead public count coler 1963 crane 1965 price 1963 wilson 1964 there practic measur qualiti larg number paper life's work larg number scientist the scienc citat index sci year ago reliabl tool measur signific individu scientist' contribut start 1961 sci list bibliograph refer appear increasingli larg number journal the number citat individu receiv tabul indic rel scientif signific qualiti individu's public 