1. Monetary incentives in mail surveys;Armstrong;Public Opinion Quarterly,1975
2. A proposal for international marketing research;Ayal,1978
3. Crosscultural research methods;Brislin,1973
4. Measure unreliability: A hidden threat to cross-national marketing research?;Davis;Journal of Marketing,1981
5. Mail and telephone surveys: The total design approach;Dillman,1978