CollinsM. (1987) The problems of non-coverage and unlisted numbers in telephone surveys in Britain.Journal of the Royal Statistical Society, Series A, 150, pp. 241–253.
2.
HarrisP. (1977) The effect of clustering on costs and sampling errors of random samples.Journal of the Market Research Society, 19(3), pp. 112–122.
3.
MitofskyW. (1970) Sampling of telephone households. Unpublished CBS memorandum.
4.
WaksbergJ. (1978) Sampling methods for random digit dialing.Journal of the American Statistical Association, 73, pp. 40–46.
