1. American Statistical Association 1993 Proceedings of the International Conference on Establishment Surveys
2. Clark , C. Z. F. E. A. Vacca 1993 Proceedings of the International Conference on Establishment Surveys 352 361
3. Cowling , A. R. Chambers R. Lindsay B. Parameswaran 1993 Proceedings of the International Conference on Establishment Surveys 150 157