1. Role of waiting time, comfort and convenience in modal choice for work trip;Algers;Transpn Res. Rec.,1975
2. Design of Experiments: A Realistic Approach;Anderson,1974
3. Microeconomic theory and the valuation of travel time: some clarification;DeSerpa;Reg. Urban Econs,1973
4. Measurement of moral judgement: a comparison of scaling methods;Ekman;Perceptual and Motor Skills,1962
5. Measurement of aesthetic value by ‘direct’ and ‘indirect’ methods;Ekman;Scand. J. Psychol.,1962