1. Adiguzel, F., and Wedel, M. (2008). Split Questionnaire Design for Massive Surveys, Journal of Marketing Research, 45, 608-617. [DOI:10.1509/jmkr.45.5.608]

2. Chipperfield, J.O., and Steel, D.G. (2009). Design and Estimation for Split Questionnaire Surveys, Journal of Official Statistics, 25, 227-244.

3. Chipperfield, J.O., and Steel, D.G. (2011). Efficiency of Split Questionnaire Surveys, Journal of Statistical Planning and Inference, 141, 1925-1932. [DOI:10.1016/j.jspi.2010.12.003]

4. Grossman, M. (1972). On the Concept of Health Capital and the Demand for Health, Journal of Political Economy, 80, 223-255. [DOI:10.1086/259880]

5. Herzog, A.R., and Bachman, J.G. (1981). Effects of Questionnaire Length on Response Quality, Public Opinion Quarterly, 45, 549-559. [DOI:10.1086/268687]

6. Ioannidis, E., Merkouris, T., Zhang, L.C., Karlberg, M., Petrakos, M., Reis, F., and Stavropoulos, P. (2016). On a Modular Approach to the Design of Integrated Social Surveys, Journal of Official Statistics, 32, 259-286. [DOI:10.1515/jos-2016-0013]

7. Kamgar, S., and Navvabpour, H. (2017). An Efficient Method for Estimating Population Parameters Using Split Questionnaire Design, Journal of Statistical Research of Iran JSRI, 14, 77-99. [DOI:10.18869/acadpub.jsri.14.1.77]

8. Merkouris, T. (2015). An Efficient Estimation Method for Matrix Survey Sampling, Survey Methodology, 41, 237-262.

9. Navarro, A., and Griffin, R.A. (1993). Matrix Sampling Designs for the Year 2000 Census, In American Statistical Association, Proceedings of the Section on Survey Research Methods, 480-485.

10. Parker, S.W., and Wong, R. (1997). Household Income and Health Care Expenditures in Mexico, Health Policy, 40, 237-255. [DOI:10.1016/S0168-8510(97)00011-0]

11. Peytchev, A., and Peytcheva, E. (2017). Reduction of Measurement Error due to Survey length: Evaluation of the Split Questionnaire Design Approach,textit In Survey Research Methods, 11, 361-368.

12. Raghunathan, T.E., and Grizzle, J.E. (1995). A Split Questionnaire Survey Design, Journal of the American Statistical Association, 90 ,54-63. [DOI:10.1080/01621459.1995.10476488]

13. Savojipour, S., Assari Arani, A., Agheli, L., and Hassanzadeh, A. (2018). The Determinants of Urban Families' Health Expenditure, Journal of Econimic Poliy, 10, 25-52. [DOI:10.29252/jep.10.18.25]

14. Shoemaker, D.M. (1973). A Note on Allocating Items to Subtests in Multiple Matrix Sampling and Approximating Standard Errors of Estimate with the Jackknife, Journal of Educational Measurement, 10, 211-219. [DOI:10.1111/j.1745-3984.1973.tb00799.x]

15. Thomas, N., Raghunathan, T.E., Schenker, N., Katzoff, M.J., and Johnson, C.L. (2006). An Evaluation of Matrix Sampling Methods Using Data from the National Health and Nutrition Examination Survey, Survey Methodology, 32, 217.

16. Tourangeau, R. (1984). Cognitive Sciences and Survey Methods, Cognitive Aspects of Survey Methodology: Building a Bridge Between Disciplines, 15, 73-100.