Citation Impact
Citing Papers
Empirical research methods in operations management
1990 Standout
Toward a Definition of Mixed Methods Research
2007 Standout
Mixing Qualitative and Quantitative Methods: Triangulation in Action
1979 Standout
Unobtrusive Measures
1976
Works of Helmut E. Lück being referenced
Die Technik der verlorenen Briefe – Ein neues Instrument verhaltensbezogener Einstellungsmessung? / Lost-Letter-Technique – A New Instrument of Measuring Attitudes Towards Behavior?
1973