4Yew-Kwang. Ng, 1996: Happiness Surveys: Some Comparability Issues and An Exploratory Survey Based on Just Perceivable Increments, Social Indicators Research 38, pp. 1 - 27.
5Experienced utility and objective happiness: A moment-based approach. Ch. 37 in Kahneman, D and Tversky, A. (Eds.), Choices, Values and Frames. New York: Cambrige University Press and the Russell Sage Foundation, 2000, 673 - 692.
6Ed sandvik, Ed Diener, & Larry seldlitz. Subjective wen-being: The convergence and stability of self-report and non-self-report measures. Journal of porsonality, 1993:61 (3): 318-342.
8Diener R. Emmons R. A. Larsen R. J. etal. The satisfaction with life seal. Journal of personality assessment, 1985:49 (1) : 71 - 75.
9Ed Diener, Christe K. Napa Sconon, Shigehiro oishi, Vivian dzokoto, & Eunkook mark sub. Positity and the construction of life, satisfaction judgments: Global happiness is not the sum of its parts. Journal of happinessstudies, 2000: 1: 159- 176.
10M. Schmitt, & J. C. Jvchtern.. The structure of subjective well-being in middle adulthood. Age and mentalhealth, 2001 : 5 (l) : 47 - 55.