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A concise guide to market research : the process, data, and methods using IBM SPSS statistics
Mooi, Erik, (2011)
The new marketing research systems : how to use strategic database information for better marketing decisions
Curry, David J., (1993)
Customer satisfaction evaluation : methods for measuring and implementing service quality
Grigoroudis, Evangelos, (2010)
Detecting "Small" Mean Shifts in Time Series
Farley, John U., (1970)
Analysis of processes generating noisy time series data
Becwith, Neil E., (1975)
Spectral analysis
Farley, John U., (1969)